257430240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^2$

素因数の和:234

約数の個数: 216

約数和(自身を含む): 934347960

約数和(自身を除く): 676917720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 96, 97, 114, 120, 144, 152, 160, 171, 180, 190, 194, 228, 240, 285, 288, 291, 304, 342, 360, 380, 388, 456, 480, 485, 570, 582, 608, 684, 720, 760, 776, 855, 873, 912, 970, 1140, 1164, 1368, 1440, 1455, 1520, 1552, 1710, 1746, 1824, 1843, 1940, 2280, 2328, 2736, 2910, 3040, 3104, 3420, 3492, 3686, 3880, 4365, 4560, 4656, 5472, 5529, 5820, 6840, 6984, 7372, 7760, 8730, 9120, 9215, 9312, 9409, 11058, 11640, 13680, 13968, 14744, 15520, 16587, 17460, 18430, 18818, 22116, 23280, 27360, 27645, 27936, 28227, 29488, 33174, 34920, 36860, 37636, 44232, 46560, 47045, 55290, 56454, 58976, 66348, 69840, 73720, 75272, 82935, 84681, 88464, 94090, 110580, 112908, 132696, 139680, 141135, 147440, 150544, 165870, 169362, 176928, 178771, 188180, 221160, 225816, 265392, 282270, 294880, 301088, 331740, 338724, 357542, 376360, 423405, 442320, 451632, 530784, 536313, 564540, 663480, 677448, 715084, 752720, 846810, 884640, 893855, 903264, 1072626, 1129080, 1326960, 1354896, 1430168, 1505440, 1608939, 1693620, 1787710, 2145252, 2258160, 2653920, 2681565, 2709792, 2860336, 3217878, 3387240, 3575420, 4290504, 4516320, 5363130, 5720672, 6435756, 6774480, 7150840, 8044695, 8581008, 10726260, 12871512, 13548960, 14301680, 16089390, 17162016, 21452520, 25743024, 28603360, 32178780, 42905040, 51486048, 64357560, 85810080, 128715120, 257430240]

約数ペア:

[(1, 257430240), (2, 128715120), (3, 85810080), (4, 64357560), (5, 51486048), (6, 42905040), (8, 32178780), (9, 28603360), (10, 25743024), (12, 21452520), (15, 17162016), (16, 16089390), (18, 14301680), (19, 13548960), (20, 12871512), (24, 10726260), (30, 8581008), (32, 8044695), (36, 7150840), (38, 6774480), (40, 6435756), (45, 5720672), (48, 5363130), (57, 4516320), (60, 4290504), (72, 3575420), (76, 3387240), (80, 3217878), (90, 2860336), (95, 2709792), (96, 2681565), (97, 2653920), (114, 2258160), (120, 2145252), (144, 1787710), (152, 1693620), (160, 1608939), (171, 1505440), (180, 1430168), (190, 1354896), (194, 1326960), (228, 1129080), (240, 1072626), (285, 903264), (288, 893855), (291, 884640), (304, 846810), (342, 752720), (360, 715084), (380, 677448), (388, 663480), (456, 564540), (480, 536313), (485, 530784), (570, 451632), (582, 442320), (608, 423405), (684, 376360), (720, 357542), (760, 338724), (776, 331740), (855, 301088), (873, 294880), (912, 282270), (970, 265392), (1140, 225816), (1164, 221160), (1368, 188180), (1440, 178771), (1455, 176928), (1520, 169362), (1552, 165870), (1710, 150544), (1746, 147440), (1824, 141135), (1843, 139680), (1940, 132696), (2280, 112908), (2328, 110580), (2736, 94090), (2910, 88464), (3040, 84681), (3104, 82935), (3420, 75272), (3492, 73720), (3686, 69840), (3880, 66348), (4365, 58976), (4560, 56454), (4656, 55290), (5472, 47045), (5529, 46560), (5820, 44232), (6840, 37636), (6984, 36860), (7372, 34920), (7760, 33174), (8730, 29488), (9120, 28227), (9215, 27936), (9312, 27645), (9409, 27360), (11058, 23280), (11640, 22116), (13680, 18818), (13968, 18430), (14744, 17460), (15520, 16587)]