21050978

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{1021}}^1$

素因数の和:1110

約数の個数: 24

約数和(自身を含む): 34786836

約数和(自身を除く): 13735858

約数列:

[1, 2, 13, 26, 61, 122, 169, 338, 793, 1021, 1586, 2042, 10309, 13273, 20618, 26546, 62281, 124562, 172549, 345098, 809653, 1619306, 10525489, 21050978]

約数ペア:

[(1, 21050978), (2, 10525489), (13, 1619306), (26, 809653), (61, 345098), (122, 172549), (169, 124562), (338, 62281), (793, 26546), (1021, 20618), (1586, 13273), (2042, 10309)]