21195916

素因数分解:

$2^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{2287}}^1$

素因数の和:2629

約数の個数: 24

約数和(自身を含む): 42538496

約数和(自身を除く): 21342580

約数列:

[1, 2, 4, 7, 14, 28, 331, 662, 1324, 2287, 2317, 4574, 4634, 9148, 9268, 16009, 32018, 64036, 756997, 1513994, 3027988, 5298979, 10597958, 21195916]

約数ペア:

[(1, 21195916), (2, 10597958), (4, 5298979), (7, 3027988), (14, 1513994), (28, 756997), (331, 64036), (662, 32018), (1324, 16009), (2287, 9268), (2317, 9148), (4574, 4634)]