257450760

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{283}}^1$

素因数の和:345

約数の個数: 288

約数和(自身を含む): 1012789440

約数和(自身を除く): 755338680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 114, 120, 126, 133, 140, 152, 168, 171, 180, 190, 210, 228, 252, 266, 280, 283, 285, 315, 342, 360, 361, 380, 399, 420, 456, 504, 532, 566, 570, 630, 665, 684, 722, 760, 798, 840, 849, 855, 1064, 1083, 1132, 1140, 1197, 1260, 1330, 1368, 1415, 1444, 1596, 1698, 1710, 1805, 1981, 1995, 2166, 2264, 2280, 2394, 2520, 2527, 2547, 2660, 2830, 2888, 3192, 3249, 3396, 3420, 3610, 3962, 3990, 4245, 4332, 4788, 5054, 5094, 5320, 5377, 5415, 5660, 5943, 5985, 6498, 6792, 6840, 7220, 7581, 7924, 7980, 8490, 8664, 9576, 9905, 10108, 10188, 10754, 10830, 11320, 11886, 11970, 12635, 12735, 12996, 14440, 15162, 15848, 15960, 16131, 16245, 16980, 17829, 19810, 20216, 20376, 21508, 21660, 22743, 23772, 23940, 25270, 25470, 25992, 26885, 29715, 30324, 32262, 32490, 33960, 35658, 37639, 37905, 39620, 43016, 43320, 45486, 47544, 47880, 48393, 50540, 50940, 53770, 59430, 60648, 64524, 64980, 71316, 75278, 75810, 79240, 80655, 89145, 90972, 96786, 101080, 101880, 102163, 107540, 112917, 113715, 118860, 129048, 129960, 142632, 150556, 151620, 161310, 178290, 181944, 188195, 193572, 204326, 215080, 225834, 227430, 237720, 241965, 301112, 303240, 306489, 322620, 338751, 356580, 376390, 387144, 408652, 451668, 454860, 483930, 510815, 564585, 612978, 645240, 677502, 713160, 715141, 752780, 817304, 903336, 909720, 919467, 967860, 1021630, 1129170, 1225956, 1355004, 1430282, 1505560, 1532445, 1693755, 1838934, 1935720, 2043260, 2145423, 2258340, 2451912, 2710008, 2860564, 3064890, 3387510, 3575705, 3677868, 4086520, 4290846, 4516680, 4597335, 5721128, 6129780, 6436269, 6775020, 7151410, 7355736, 8581692, 9194670, 10727115, 12259560, 12872538, 13550040, 14302820, 17163384, 18389340, 21454230, 25745076, 28605640, 32181345, 36778680, 42908460, 51490152, 64362690, 85816920, 128725380, 257450760]

約数ペア:

[(1, 257450760), (2, 128725380), (3, 85816920), (4, 64362690), (5, 51490152), (6, 42908460), (7, 36778680), (8, 32181345), (9, 28605640), (10, 25745076), (12, 21454230), (14, 18389340), (15, 17163384), (18, 14302820), (19, 13550040), (20, 12872538), (21, 12259560), (24, 10727115), (28, 9194670), (30, 8581692), (35, 7355736), (36, 7151410), (38, 6775020), (40, 6436269), (42, 6129780), (45, 5721128), (56, 4597335), (57, 4516680), (60, 4290846), (63, 4086520), (70, 3677868), (72, 3575705), (76, 3387510), (84, 3064890), (90, 2860564), (95, 2710008), (105, 2451912), (114, 2258340), (120, 2145423), (126, 2043260), (133, 1935720), (140, 1838934), (152, 1693755), (168, 1532445), (171, 1505560), (180, 1430282), (190, 1355004), (210, 1225956), (228, 1129170), (252, 1021630), (266, 967860), (280, 919467), (283, 909720), (285, 903336), (315, 817304), (342, 752780), (360, 715141), (361, 713160), (380, 677502), (399, 645240), (420, 612978), (456, 564585), (504, 510815), (532, 483930), (566, 454860), (570, 451668), (630, 408652), (665, 387144), (684, 376390), (722, 356580), (760, 338751), (798, 322620), (840, 306489), (849, 303240), (855, 301112), (1064, 241965), (1083, 237720), (1132, 227430), (1140, 225834), (1197, 215080), (1260, 204326), (1330, 193572), (1368, 188195), (1415, 181944), (1444, 178290), (1596, 161310), (1698, 151620), (1710, 150556), (1805, 142632), (1981, 129960), (1995, 129048), (2166, 118860), (2264, 113715), (2280, 112917), (2394, 107540), (2520, 102163), (2527, 101880), (2547, 101080), (2660, 96786), (2830, 90972), (2888, 89145), (3192, 80655), (3249, 79240), (3396, 75810), (3420, 75278), (3610, 71316), (3962, 64980), (3990, 64524), (4245, 60648), (4332, 59430), (4788, 53770), (5054, 50940), (5094, 50540), (5320, 48393), (5377, 47880), (5415, 47544), (5660, 45486), (5943, 43320), (5985, 43016), (6498, 39620), (6792, 37905), (6840, 37639), (7220, 35658), (7581, 33960), (7924, 32490), (7980, 32262), (8490, 30324), (8664, 29715), (9576, 26885), (9905, 25992), (10108, 25470), (10188, 25270), (10754, 23940), (10830, 23772), (11320, 22743), (11886, 21660), (11970, 21508), (12635, 20376), (12735, 20216), (12996, 19810), (14440, 17829), (15162, 16980), (15848, 16245), (15960, 16131)]