80472820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56671}}^1$

素因数の和:56751

約数の個数: 24

約数和(自身を含む): 171376128

約数和(自身を除く): 90903308

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56671, 113342, 226684, 283355, 566710, 1133420, 4023641, 8047282, 16094564, 20118205, 40236410, 80472820]

約数ペア:

[(1, 80472820), (2, 40236410), (4, 20118205), (5, 16094564), (10, 8047282), (20, 4023641), (71, 1133420), (142, 566710), (284, 283355), (355, 226684), (710, 113342), (1420, 56671)]