40690040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 96132960

約数和(自身を除く): 55442920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 410, 430, 577, 820, 860, 1154, 1640, 1720, 1763, 2308, 2885, 3526, 4616, 5770, 7052, 8815, 11540, 14104, 17630, 23080, 23657, 24811, 35260, 47314, 49622, 70520, 94628, 99244, 118285, 124055, 189256, 198488, 236570, 248110, 473140, 496220, 946280, 992440, 1017251, 2034502, 4069004, 5086255, 8138008, 10172510, 20345020, 40690040]

約数ペア:

[(1, 40690040), (2, 20345020), (4, 10172510), (5, 8138008), (8, 5086255), (10, 4069004), (20, 2034502), (40, 1017251), (41, 992440), (43, 946280), (82, 496220), (86, 473140), (164, 248110), (172, 236570), (205, 198488), (215, 189256), (328, 124055), (344, 118285), (410, 99244), (430, 94628), (577, 70520), (820, 49622), (860, 47314), (1154, 35260), (1640, 24811), (1720, 23657), (1763, 23080), (2308, 17630), (2885, 14104), (3526, 11540), (4616, 8815), (5770, 7052)]