18050980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10141}}^1$

素因数の和:10239

約数の個数: 24

約数和(自身を含む): 38336760

約数和(自身を除く): 20285780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10141, 20282, 40564, 50705, 101410, 202820, 902549, 1805098, 3610196, 4512745, 9025490, 18050980]

約数ペア:

[(1, 18050980), (2, 9025490), (4, 4512745), (5, 3610196), (10, 1805098), (20, 902549), (89, 202820), (178, 101410), (356, 50705), (445, 40564), (890, 20282), (1780, 10141)]