221545880

素因数分解:

$2^3\times 5^1\times {\mathrm{5538647}}^1$

素因数の和:5538658

約数の個数: 16

約数和(自身を含む): 498478320

約数和(自身を除く): 276932440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5538647, 11077294, 22154588, 27693235, 44309176, 55386470, 110772940, 221545880]

約数ペア:

[(1, 221545880), (2, 110772940), (4, 55386470), (5, 44309176), (8, 27693235), (10, 22154588), (20, 11077294), (40, 5538647)]