21061360

素因数分解:

$2^4\times 5^1\times {\mathrm{263267}}^1$

素因数の和:263280

約数の個数: 20

約数和(自身を含む): 48967848

約数和(自身を除く): 27906488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263267, 526534, 1053068, 1316335, 2106136, 2632670, 4212272, 5265340, 10530680, 21061360]

約数ペア:

[(1, 21061360), (2, 10530680), (4, 5265340), (5, 4212272), (8, 2632670), (10, 2106136), (16, 1316335), (20, 1053068), (40, 526534), (80, 263267)]