20859410

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{503}}^1$

素因数の和:563

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 24863470

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 29, 55, 58, 65, 110, 130, 143, 145, 286, 290, 319, 377, 503, 638, 715, 754, 1006, 1430, 1595, 1885, 2515, 3190, 3770, 4147, 5030, 5533, 6539, 8294, 11066, 13078, 14587, 20735, 27665, 29174, 32695, 41470, 55330, 65390, 71929, 72935, 143858, 145870, 160457, 189631, 320914, 359645, 379262, 719290, 802285, 948155, 1604570, 1896310, 2085941, 4171882, 10429705, 20859410]

約数ペア:

[(1, 20859410), (2, 10429705), (5, 4171882), (10, 2085941), (11, 1896310), (13, 1604570), (22, 948155), (26, 802285), (29, 719290), (55, 379262), (58, 359645), (65, 320914), (110, 189631), (130, 160457), (143, 145870), (145, 143858), (286, 72935), (290, 71929), (319, 65390), (377, 55330), (503, 41470), (638, 32695), (715, 29174), (754, 27665), (1006, 20735), (1430, 14587), (1595, 13078), (1885, 11066), (2515, 8294), (3190, 6539), (3770, 5533), (4147, 5030)]