18918845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{5639}}^1$

素因数の和:5716

約数の個数: 16

約数和(自身を含む): 25176960

約数和(自身を除く): 6258115

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 5639, 28195, 62029, 310145, 343979, 1719895, 3783769, 18918845]

約数ペア:

[(1, 18918845), (5, 3783769), (11, 1719895), (55, 343979), (61, 310145), (305, 62029), (671, 28195), (3355, 5639)]