20310160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:416

約数の個数: 80

約数和(自身を含む): 51871680

約数和(自身を除く): 31561520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 59, 65, 80, 104, 118, 130, 208, 236, 260, 295, 331, 472, 520, 590, 662, 767, 944, 1040, 1180, 1324, 1534, 1655, 2360, 2648, 3068, 3310, 3835, 4303, 4720, 5296, 6136, 6620, 7670, 8606, 12272, 13240, 15340, 17212, 19529, 21515, 26480, 30680, 34424, 39058, 43030, 61360, 68848, 78116, 86060, 97645, 156232, 172120, 195290, 253877, 312464, 344240, 390580, 507754, 781160, 1015508, 1269385, 1562320, 2031016, 2538770, 4062032, 5077540, 10155080, 20310160]

約数ペア:

[(1, 20310160), (2, 10155080), (4, 5077540), (5, 4062032), (8, 2538770), (10, 2031016), (13, 1562320), (16, 1269385), (20, 1015508), (26, 781160), (40, 507754), (52, 390580), (59, 344240), (65, 312464), (80, 253877), (104, 195290), (118, 172120), (130, 156232), (208, 97645), (236, 86060), (260, 78116), (295, 68848), (331, 61360), (472, 43030), (520, 39058), (590, 34424), (662, 30680), (767, 26480), (944, 21515), (1040, 19529), (1180, 17212), (1324, 15340), (1534, 13240), (1655, 12272), (2360, 8606), (2648, 7670), (3068, 6620), (3310, 6136), (3835, 5296), (4303, 4720)]