18695221

素因数分解:

${\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{233}}^1$

素因数の和:396

約数の個数: 16

約数和(自身を含む): 20442240

約数和(自身を除く): 1747019

約数列:

[1, 19, 41, 103, 233, 779, 1957, 4223, 4427, 9553, 23999, 80237, 181507, 455981, 983959, 18695221]

約数ペア:

[(1, 18695221), (19, 983959), (41, 455981), (103, 181507), (233, 80237), (779, 23999), (1957, 9553), (4223, 4427)]