20525620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 45682560

約数和(自身を除く): 25156940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 823, 860, 1247, 1646, 2494, 3292, 4115, 4988, 6235, 8230, 12470, 16460, 23867, 24940, 35389, 47734, 70778, 95468, 119335, 141556, 176945, 238670, 353890, 477340, 707780, 1026281, 2052562, 4105124, 5131405, 10262810, 20525620]

約数ペア:

[(1, 20525620), (2, 10262810), (4, 5131405), (5, 4105124), (10, 2052562), (20, 1026281), (29, 707780), (43, 477340), (58, 353890), (86, 238670), (116, 176945), (145, 141556), (172, 119335), (215, 95468), (290, 70778), (430, 47734), (580, 35389), (823, 24940), (860, 23867), (1247, 16460), (1646, 12470), (2494, 8230), (3292, 6235), (4115, 4988)]