18636891

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3593}}^1$

素因数の和:3635

約数の個数: 32

約数和(自身を含む): 32202240

約数和(自身を除く): 13565349

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 3593, 5187, 10779, 25151, 46709, 68267, 75453, 140127, 204801, 326963, 477869, 887471, 980889, 1433607, 2662413, 6212297, 18636891]

約数ペア:

[(1, 18636891), (3, 6212297), (7, 2662413), (13, 1433607), (19, 980889), (21, 887471), (39, 477869), (57, 326963), (91, 204801), (133, 140127), (247, 75453), (273, 68267), (399, 46709), (741, 25151), (1729, 10779), (3593, 5187)]