71398220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87071}}^1$

素因数の和:87121

約数の個数: 24

約数和(自身を含む): 153595008

約数和(自身を除く): 82196788

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87071, 174142, 348284, 435355, 870710, 1741420, 3569911, 7139822, 14279644, 17849555, 35699110, 71398220]

約数ペア:

[(1, 71398220), (2, 35699110), (4, 17849555), (5, 14279644), (10, 7139822), (20, 3569911), (41, 1741420), (82, 870710), (164, 435355), (205, 348284), (410, 174142), (820, 87071)]