128653390

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{30559}}^1$

素因数の和:30987

約数の個数: 16

約数和(自身を含む): 232133760

約数和(自身を除く): 103480370

約数列:

[1, 2, 5, 10, 421, 842, 2105, 4210, 30559, 61118, 152795, 305590, 12865339, 25730678, 64326695, 128653390]

約数ペア:

[(1, 128653390), (2, 64326695), (5, 25730678), (10, 12865339), (421, 305590), (842, 152795), (2105, 61118), (4210, 30559)]