123526520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1709}}^1$

素因数の和:1872

約数の個数: 64

約数和(自身を含む): 301644000

約数和(自身を除く): 178117480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 260, 278, 520, 556, 695, 1112, 1390, 1709, 1807, 2780, 3418, 3614, 5560, 6836, 7228, 8545, 9035, 13672, 14456, 17090, 18070, 22217, 34180, 36140, 44434, 68360, 72280, 88868, 111085, 177736, 222170, 237551, 444340, 475102, 888680, 950204, 1187755, 1900408, 2375510, 3088163, 4751020, 6176326, 9502040, 12352652, 15440815, 24705304, 30881630, 61763260, 123526520]

約数ペア:

[(1, 123526520), (2, 61763260), (4, 30881630), (5, 24705304), (8, 15440815), (10, 12352652), (13, 9502040), (20, 6176326), (26, 4751020), (40, 3088163), (52, 2375510), (65, 1900408), (104, 1187755), (130, 950204), (139, 888680), (260, 475102), (278, 444340), (520, 237551), (556, 222170), (695, 177736), (1112, 111085), (1390, 88868), (1709, 72280), (1807, 68360), (2780, 44434), (3418, 36140), (3614, 34180), (5560, 22217), (6836, 18070), (7228, 17090), (8545, 14456), (9035, 13672)]