21000261788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{2689}}^1\times {\mathrm{177493}}^1$

素因数の和:180197

約数の個数: 24

約数和(自身を含む): 40106544240

約数和(自身を除く): 19106282452

約数列:

[1, 2, 4, 11, 22, 44, 2689, 5378, 10756, 29579, 59158, 118316, 177493, 354986, 709972, 1952423, 3904846, 7809692, 477278677, 954557354, 1909114708, 5250065447, 10500130894, 21000261788]

約数ペア:

[(1, 21000261788), (2, 10500130894), (4, 5250065447), (11, 1909114708), (22, 954557354), (44, 477278677), (2689, 7809692), (5378, 3904846), (10756, 1952423), (29579, 709972), (59158, 354986), (118316, 177493)]