18810135

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9721}}^1$

素因数の和:9775

約数の個数: 24

約数和(自身を含む): 33365904

約数和(自身を除く): 14555769

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 9721, 29163, 48605, 87489, 145815, 418003, 437445, 1254009, 2090015, 3762027, 6270045, 18810135]

約数ペア:

[(1, 18810135), (3, 6270045), (5, 3762027), (9, 2090015), (15, 1254009), (43, 437445), (45, 418003), (129, 145815), (215, 87489), (387, 48605), (645, 29163), (1935, 9721)]