21456994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 35872704

約数和(自身を除く): 14415710

約数列:

[1, 2, 13, 26, 61, 83, 122, 163, 166, 326, 793, 1079, 1586, 2119, 2158, 4238, 5063, 9943, 10126, 13529, 19886, 27058, 65819, 129259, 131638, 175877, 258518, 351754, 825269, 1650538, 10728497, 21456994]

約数ペア:

[(1, 21456994), (2, 10728497), (13, 1650538), (26, 825269), (61, 351754), (83, 258518), (122, 175877), (163, 131638), (166, 129259), (326, 65819), (793, 27058), (1079, 19886), (1586, 13529), (2119, 10126), (2158, 9943), (4238, 5063)]