21398962

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{293}}^1$

素因数の和:414

約数の個数: 24

約数和(自身を含む): 35352324

約数和(自身を除く): 13953362

約数列:

[1, 2, 13, 26, 53, 106, 293, 586, 689, 1378, 2809, 3809, 5618, 7618, 15529, 31058, 36517, 73034, 201877, 403754, 823037, 1646074, 10699481, 21398962]

約数ペア:

[(1, 21398962), (2, 10699481), (13, 1646074), (26, 823037), (53, 403754), (106, 201877), (293, 73034), (586, 36517), (689, 31058), (1378, 15529), (2809, 7618), (3809, 5618)]