31663480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 74844000

約数和(自身を除く): 43180520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 410, 430, 449, 820, 860, 898, 1640, 1720, 1763, 1796, 2245, 3526, 3592, 4490, 7052, 8815, 8980, 14104, 17630, 17960, 18409, 19307, 35260, 36818, 38614, 70520, 73636, 77228, 92045, 96535, 147272, 154456, 184090, 193070, 368180, 386140, 736360, 772280, 791587, 1583174, 3166348, 3957935, 6332696, 7915870, 15831740, 31663480]

約数ペア:

[(1, 31663480), (2, 15831740), (4, 7915870), (5, 6332696), (8, 3957935), (10, 3166348), (20, 1583174), (40, 791587), (41, 772280), (43, 736360), (82, 386140), (86, 368180), (164, 193070), (172, 184090), (205, 154456), (215, 147272), (328, 96535), (344, 92045), (410, 77228), (430, 73636), (449, 70520), (820, 38614), (860, 36818), (898, 35260), (1640, 19307), (1720, 18409), (1763, 17960), (1796, 17630), (2245, 14104), (3526, 8980), (3592, 8815), (4490, 7052)]