18756530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{647}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 17821774

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 223, 446, 647, 1115, 1294, 2230, 2899, 3235, 5798, 6470, 8411, 14495, 16822, 28990, 42055, 84110, 144281, 288562, 721405, 1442810, 1875653, 3751306, 9378265, 18756530]

約数ペア:

[(1, 18756530), (2, 9378265), (5, 3751306), (10, 1875653), (13, 1442810), (26, 721405), (65, 288562), (130, 144281), (223, 84110), (446, 42055), (647, 28990), (1115, 16822), (1294, 14495), (2230, 8411), (2899, 6470), (3235, 5798)]