19031980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86509}}^1$

素因数の和:86529

約数の個数: 24

約数和(自身を含む): 43601040

約数和(自身を除く): 24569060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86509, 173018, 346036, 432545, 865090, 951599, 1730180, 1903198, 3806396, 4757995, 9515990, 19031980]

約数ペア:

[(1, 19031980), (2, 9515990), (4, 4757995), (5, 3806396), (10, 1903198), (11, 1730180), (20, 951599), (22, 865090), (44, 432545), (55, 346036), (110, 173018), (220, 86509)]