18923180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10631}}^1$

素因数の和:10729

約数の個数: 24

約数和(自身を含む): 40188960

約数和(自身を除く): 21265780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10631, 21262, 42524, 53155, 106310, 212620, 946159, 1892318, 3784636, 4730795, 9461590, 18923180]

約数ペア:

[(1, 18923180), (2, 9461590), (4, 4730795), (5, 3784636), (10, 1892318), (20, 946159), (89, 212620), (178, 106310), (356, 53155), (445, 42524), (890, 21262), (1780, 10631)]