31215760

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:392

約数の個数: 80

約数和(自身を含む): 76995072

約数和(自身を除く): 45779312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 307, 310, 328, 410, 496, 614, 620, 656, 820, 1228, 1240, 1271, 1535, 1640, 2456, 2480, 2542, 3070, 3280, 4912, 5084, 6140, 6355, 9517, 10168, 12280, 12587, 12710, 19034, 20336, 24560, 25174, 25420, 38068, 47585, 50348, 50840, 62935, 76136, 95170, 100696, 101680, 125870, 152272, 190340, 201392, 251740, 380680, 390197, 503480, 761360, 780394, 1006960, 1560788, 1950985, 3121576, 3901970, 6243152, 7803940, 15607880, 31215760]

約数ペア:

[(1, 31215760), (2, 15607880), (4, 7803940), (5, 6243152), (8, 3901970), (10, 3121576), (16, 1950985), (20, 1560788), (31, 1006960), (40, 780394), (41, 761360), (62, 503480), (80, 390197), (82, 380680), (124, 251740), (155, 201392), (164, 190340), (205, 152272), (248, 125870), (307, 101680), (310, 100696), (328, 95170), (410, 76136), (496, 62935), (614, 50840), (620, 50348), (656, 47585), (820, 38068), (1228, 25420), (1240, 25174), (1271, 24560), (1535, 20336), (1640, 19034), (2456, 12710), (2480, 12587), (2542, 12280), (3070, 10168), (3280, 9517), (4912, 6355), (5084, 6140)]