131308520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 354931200

約数和(自身を除く): 223622680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 103, 116, 140, 145, 157, 203, 206, 232, 280, 290, 314, 406, 412, 515, 580, 628, 721, 785, 812, 824, 1015, 1030, 1099, 1160, 1256, 1442, 1570, 1624, 2030, 2060, 2198, 2884, 2987, 3140, 3605, 4060, 4120, 4396, 4553, 5495, 5768, 5974, 6280, 7210, 8120, 8792, 9106, 10990, 11948, 14420, 14935, 16171, 18212, 20909, 21980, 22765, 23896, 28840, 29870, 31871, 32342, 36424, 41818, 43960, 45530, 59740, 63742, 64684, 80855, 83636, 91060, 104545, 113197, 119480, 127484, 129368, 159355, 161710, 167272, 182120, 209090, 226394, 254968, 318710, 323420, 418180, 452788, 468959, 565985, 637420, 646840, 836360, 905576, 937918, 1131970, 1274840, 1875836, 2263940, 2344795, 3282713, 3751672, 4527880, 4689590, 6565426, 9379180, 13130852, 16413565, 18758360, 26261704, 32827130, 65654260, 131308520]

約数ペア:

[(1, 131308520), (2, 65654260), (4, 32827130), (5, 26261704), (7, 18758360), (8, 16413565), (10, 13130852), (14, 9379180), (20, 6565426), (28, 4689590), (29, 4527880), (35, 3751672), (40, 3282713), (56, 2344795), (58, 2263940), (70, 1875836), (103, 1274840), (116, 1131970), (140, 937918), (145, 905576), (157, 836360), (203, 646840), (206, 637420), (232, 565985), (280, 468959), (290, 452788), (314, 418180), (406, 323420), (412, 318710), (515, 254968), (580, 226394), (628, 209090), (721, 182120), (785, 167272), (812, 161710), (824, 159355), (1015, 129368), (1030, 127484), (1099, 119480), (1160, 113197), (1256, 104545), (1442, 91060), (1570, 83636), (1624, 80855), (2030, 64684), (2060, 63742), (2198, 59740), (2884, 45530), (2987, 43960), (3140, 41818), (3605, 36424), (4060, 32342), (4120, 31871), (4396, 29870), (4553, 28840), (5495, 23896), (5768, 22765), (5974, 21980), (6280, 20909), (7210, 18212), (8120, 16171), (8792, 14935), (9106, 14420), (10990, 11948)]