21390472

素因数分解:

$2^3\times {\mathrm{191}}^1\times {\mathrm{13999}}^1$

素因数の和:14196

約数の個数: 16

約数和(自身を含む): 40320000

約数和(自身を除く): 18929528

約数列:

[1, 2, 4, 8, 191, 382, 764, 1528, 13999, 27998, 55996, 111992, 2673809, 5347618, 10695236, 21390472]

約数ペア:

[(1, 21390472), (2, 10695236), (4, 5347618), (8, 2673809), (191, 111992), (382, 55996), (764, 27998), (1528, 13999)]