21384808

素因数分解:

$2^3\times {\mathrm{223}}^1\times {\mathrm{11987}}^1$

素因数の和:12216

約数の個数: 16

約数和(自身を含む): 40279680

約数和(自身を除く): 18894872

約数列:

[1, 2, 4, 8, 223, 446, 892, 1784, 11987, 23974, 47948, 95896, 2673101, 5346202, 10692404, 21384808]

約数ペア:

[(1, 21384808), (2, 10692404), (4, 5346202), (8, 2673101), (223, 95896), (446, 47948), (892, 23974), (1784, 11987)]