18405040

素因数分解:

$2^4\times 5^1\times {\mathrm{230063}}^1$

素因数の和:230076

約数の個数: 20

約数和(自身を含む): 42791904

約数和(自身を除く): 24386864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230063, 460126, 920252, 1150315, 1840504, 2300630, 3681008, 4601260, 9202520, 18405040]

約数ペア:

[(1, 18405040), (2, 9202520), (4, 4601260), (5, 3681008), (8, 2300630), (10, 1840504), (16, 1150315), (20, 920252), (40, 460126), (80, 230063)]