21421010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3109}}^1$

素因数の和:3182

約数の個数: 32

約数和(自身を含む): 42320880

約数和(自身を除く): 20899870

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3109, 3445, 6218, 6890, 15545, 31090, 40417, 80834, 164777, 202085, 329554, 404170, 823885, 1647770, 2142101, 4284202, 10710505, 21421010]

約数ペア:

[(1, 21421010), (2, 10710505), (5, 4284202), (10, 2142101), (13, 1647770), (26, 823885), (53, 404170), (65, 329554), (106, 202085), (130, 164777), (265, 80834), (530, 40417), (689, 31090), (1378, 15545), (3109, 6890), (3445, 6218)]