18420950

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5189}}^1$

素因数の和:5272

約数の個数: 24

約数和(自身を含む): 34752240

約数和(自身を除く): 16331290

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 5189, 10378, 25945, 51890, 129725, 259450, 368419, 736838, 1842095, 3684190, 9210475, 18420950]

約数ペア:

[(1, 18420950), (2, 9210475), (5, 3684190), (10, 1842095), (25, 736838), (50, 368419), (71, 259450), (142, 129725), (355, 51890), (710, 25945), (1775, 10378), (3550, 5189)]