20642674

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:574

約数の個数: 24

約数和(自身を含む): 33829380

約数和(自身を除く): 13186706

約数列:

[1, 2, 13, 26, 157, 169, 314, 338, 389, 778, 2041, 4082, 5057, 10114, 26533, 53066, 61073, 65741, 122146, 131482, 793949, 1587898, 10321337, 20642674]

約数ペア:

[(1, 20642674), (2, 10321337), (13, 1587898), (26, 793949), (157, 131482), (169, 122146), (314, 65741), (338, 61073), (389, 53066), (778, 26533), (2041, 10114), (4082, 5057)]