18087700

素因数分解:

$2^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{947}}^1$

素因数の和:1152

約数の個数: 36

約数和(自身を含む): 39497472

約数和(自身を除く): 21409772

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 191, 382, 764, 947, 955, 1894, 1910, 3788, 3820, 4735, 4775, 9470, 9550, 18940, 19100, 23675, 47350, 94700, 180877, 361754, 723508, 904385, 1808770, 3617540, 4521925, 9043850, 18087700]

約数ペア:

[(1, 18087700), (2, 9043850), (4, 4521925), (5, 3617540), (10, 1808770), (20, 904385), (25, 723508), (50, 361754), (100, 180877), (191, 94700), (382, 47350), (764, 23675), (947, 19100), (955, 18940), (1894, 9550), (1910, 9470), (3788, 4775), (3820, 4735)]