21512216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{244457}}^1$

素因数の和:244474

約数の個数: 16

約数和(自身を含む): 44002440

約数和(自身を除く): 22490224

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 244457, 488914, 977828, 1955656, 2689027, 5378054, 10756108, 21512216]

約数ペア:

[(1, 21512216), (2, 10756108), (4, 5378054), (8, 2689027), (11, 1955656), (22, 977828), (44, 488914), (88, 244457)]