257642280

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5381}}^1$

素因数の和:5424

約数の個数: 192

約数和(自身を含む): 1007510400

約数和(自身を除く): 749868120

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, 285, 315, 342, 360, 380, 399, 420, 456, 504, 532, 570, 630, 665, 684, 760, 798, 840, 855, 1064, 1140, 1197, 1260, 1330, 1368, 1596, 1710, 1995, 2280, 2394, 2520, 2660, 3192, 3420, 3990, 4788, 5320, 5381, 5985, 6840, 7980, 9576, 10762, 11970, 15960, 16143, 21524, 23940, 26905, 32286, 37667, 43048, 47880, 48429, 53810, 64572, 75334, 80715, 96858, 102239, 107620, 113001, 129144, 150668, 161430, 188335, 193716, 204478, 215240, 226002, 242145, 301336, 306717, 322860, 339003, 376670, 387432, 408956, 452004, 484290, 511195, 565005, 613434, 645720, 678006, 715673, 753340, 817912, 904008, 920151, 968580, 1022390, 1130010, 1226868, 1356012, 1431346, 1506680, 1533585, 1695015, 1840302, 1937160, 2044780, 2147019, 2260020, 2453736, 2712024, 2862692, 3067170, 3390030, 3578365, 3680604, 4089560, 4294038, 4520040, 4600755, 5725384, 6134340, 6441057, 6780060, 7156730, 7361208, 8588076, 9201510, 10735095, 12268680, 12882114, 13560120, 14313460, 17176152, 18403020, 21470190, 25764228, 28626920, 32205285, 36806040, 42940380, 51528456, 64410570, 85880760, 128821140, 257642280]

約数ペア:

[(1, 257642280), (2, 128821140), (3, 85880760), (4, 64410570), (5, 51528456), (6, 42940380), (7, 36806040), (8, 32205285), (9, 28626920), (10, 25764228), (12, 21470190), (14, 18403020), (15, 17176152), (18, 14313460), (19, 13560120), (20, 12882114), (21, 12268680), (24, 10735095), (28, 9201510), (30, 8588076), (35, 7361208), (36, 7156730), (38, 6780060), (40, 6441057), (42, 6134340), (45, 5725384), (56, 4600755), (57, 4520040), (60, 4294038), (63, 4089560), (70, 3680604), (72, 3578365), (76, 3390030), (84, 3067170), (90, 2862692), (95, 2712024), (105, 2453736), (114, 2260020), (120, 2147019), (126, 2044780), (133, 1937160), (140, 1840302), (152, 1695015), (168, 1533585), (171, 1506680), (180, 1431346), (190, 1356012), (210, 1226868), (228, 1130010), (252, 1022390), (266, 968580), (280, 920151), (285, 904008), (315, 817912), (342, 753340), (360, 715673), (380, 678006), (399, 645720), (420, 613434), (456, 565005), (504, 511195), (532, 484290), (570, 452004), (630, 408956), (665, 387432), (684, 376670), (760, 339003), (798, 322860), (840, 306717), (855, 301336), (1064, 242145), (1140, 226002), (1197, 215240), (1260, 204478), (1330, 193716), (1368, 188335), (1596, 161430), (1710, 150668), (1995, 129144), (2280, 113001), (2394, 107620), (2520, 102239), (2660, 96858), (3192, 80715), (3420, 75334), (3990, 64572), (4788, 53810), (5320, 48429), (5381, 47880), (5985, 43048), (6840, 37667), (7980, 32286), (9576, 26905), (10762, 23940), (11970, 21524), (15960, 16143)]