21458312

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6689}}^1$

素因数の和:7096

約数の個数: 16

約数和(自身を含む): 40340700

約数和(自身を除く): 18882388

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6689, 13378, 26756, 53512, 2682289, 5364578, 10729156, 21458312]

約数ペア:

[(1, 21458312), (2, 10729156), (4, 5364578), (8, 2682289), (401, 53512), (802, 26756), (1604, 13378), (3208, 6689)]