21491572

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{124951}}^1$

素因数の和:124998

約数の個数: 12

約数和(自身を含む): 38485216

約数和(自身を除く): 16993644

約数列:

[1, 2, 4, 43, 86, 172, 124951, 249902, 499804, 5372893, 10745786, 21491572]

約数ペア:

[(1, 21491572), (2, 10745786), (4, 5372893), (43, 499804), (86, 249902), (172, 124951)]