21513930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17491}}^1$

素因数の和:17542

約数の個数: 32

約数和(自身を含む): 52895808

約数和(自身を除く): 31381878

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 82, 123, 205, 246, 410, 615, 1230, 17491, 34982, 52473, 87455, 104946, 174910, 262365, 524730, 717131, 1434262, 2151393, 3585655, 4302786, 7171310, 10756965, 21513930]

約数ペア:

[(1, 21513930), (2, 10756965), (3, 7171310), (5, 4302786), (6, 3585655), (10, 2151393), (15, 1434262), (30, 717131), (41, 524730), (82, 262365), (123, 174910), (205, 104946), (246, 87455), (410, 52473), (615, 34982), (1230, 17491)]