21005912

素因数分解:

$2^3\times {\mathrm{151}}^1\times {\mathrm{17389}}^1$

素因数の和:17546

約数の個数: 16

約数和(自身を含む): 39649200

約数和(自身を除く): 18643288

約数列:

[1, 2, 4, 8, 151, 302, 604, 1208, 17389, 34778, 69556, 139112, 2625739, 5251478, 10502956, 21005912]

約数ペア:

[(1, 21005912), (2, 10502956), (4, 5251478), (8, 2625739), (151, 139112), (302, 69556), (604, 34778), (1208, 17389)]