20874542

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{151}}^1\times {\mathrm{409}}^1$

素因数の和:588

約数の個数: 24

約数和(自身を含む): 34213680

約数和(自身を除く): 13339138

約数列:

[1, 2, 13, 26, 151, 169, 302, 338, 409, 818, 1963, 3926, 5317, 10634, 25519, 51038, 61759, 69121, 123518, 138242, 802867, 1605734, 10437271, 20874542]

約数ペア:

[(1, 20874542), (2, 10437271), (13, 1605734), (26, 802867), (151, 138242), (169, 123518), (302, 69121), (338, 61759), (409, 51038), (818, 25519), (1963, 10634), (3926, 5317)]