40515280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{239}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 102493440

約数和(自身を除く): 61978160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 163, 208, 239, 260, 326, 478, 520, 652, 815, 956, 1040, 1195, 1304, 1630, 1912, 2119, 2390, 2608, 3107, 3260, 3824, 4238, 4780, 6214, 6520, 8476, 9560, 10595, 12428, 13040, 15535, 16952, 19120, 21190, 24856, 31070, 33904, 38957, 42380, 49712, 62140, 77914, 84760, 124280, 155828, 169520, 194785, 248560, 311656, 389570, 506441, 623312, 779140, 1012882, 1558280, 2025764, 2532205, 3116560, 4051528, 5064410, 8103056, 10128820, 20257640, 40515280]

約数ペア:

[(1, 40515280), (2, 20257640), (4, 10128820), (5, 8103056), (8, 5064410), (10, 4051528), (13, 3116560), (16, 2532205), (20, 2025764), (26, 1558280), (40, 1012882), (52, 779140), (65, 623312), (80, 506441), (104, 389570), (130, 311656), (163, 248560), (208, 194785), (239, 169520), (260, 155828), (326, 124280), (478, 84760), (520, 77914), (652, 62140), (815, 49712), (956, 42380), (1040, 38957), (1195, 33904), (1304, 31070), (1630, 24856), (1912, 21190), (2119, 19120), (2390, 16952), (2608, 15535), (3107, 13040), (3260, 12428), (3824, 10595), (4238, 9560), (4780, 8476), (6214, 6520)]