20512201985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1277}}^1\times {\mathrm{9421}}^1$

素因数の和:10745

約数の個数: 32

約数和(自身を含む): 27743192064

約数和(自身を除く): 7230990079

約数列:

[1, 5, 11, 31, 55, 155, 341, 1277, 1705, 6385, 9421, 14047, 39587, 47105, 70235, 103631, 197935, 292051, 435457, 518155, 1460255, 2177285, 3212561, 12030617, 16062805, 60153085, 132336787, 372949127, 661683935, 1864745635, 4102440397, 20512201985]

約数ペア:

[(1, 20512201985), (5, 4102440397), (11, 1864745635), (31, 661683935), (55, 372949127), (155, 132336787), (341, 60153085), (1277, 16062805), (1705, 12030617), (6385, 3212561), (9421, 2177285), (14047, 1460255), (39587, 518155), (47105, 435457), (70235, 292051), (103631, 197935)]