21512956

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{1231}}^1$

素因数の和:1509

約数の個数: 24

約数和(自身を含む): 40049856

約数和(自身を除く): 18536900

約数列:

[1, 2, 4, 17, 34, 68, 257, 514, 1028, 1231, 2462, 4369, 4924, 8738, 17476, 20927, 41854, 83708, 316367, 632734, 1265468, 5378239, 10756478, 21512956]

約数ペア:

[(1, 21512956), (2, 10756478), (4, 5378239), (17, 1265468), (34, 632734), (68, 316367), (257, 83708), (514, 41854), (1028, 20927), (1231, 17476), (2462, 8738), (4369, 4924)]