20856550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2917}}^1$

素因数の和:2953

約数の個数: 48

約数和(自身を含む): 45590832

約数和(自身を除く): 24734282

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 130, 143, 275, 286, 325, 550, 650, 715, 1430, 2917, 3575, 5834, 7150, 14585, 29170, 32087, 37921, 64174, 72925, 75842, 145850, 160435, 189605, 320870, 379210, 417131, 802175, 834262, 948025, 1604350, 1896050, 2085655, 4171310, 10428275, 20856550]

約数ペア:

[(1, 20856550), (2, 10428275), (5, 4171310), (10, 2085655), (11, 1896050), (13, 1604350), (22, 948025), (25, 834262), (26, 802175), (50, 417131), (55, 379210), (65, 320870), (110, 189605), (130, 160435), (143, 145850), (275, 75842), (286, 72925), (325, 64174), (550, 37921), (650, 32087), (715, 29170), (1430, 14585), (2917, 7150), (3575, 5834)]