80426420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{98081}}^1$

素因数の和:98131

約数の個数: 24

約数和(自身を含む): 173016648

約数和(自身を除く): 92590228

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 98081, 196162, 392324, 490405, 980810, 1961620, 4021321, 8042642, 16085284, 20106605, 40213210, 80426420]

約数ペア:

[(1, 80426420), (2, 40213210), (4, 20106605), (5, 16085284), (10, 8042642), (20, 4021321), (41, 1961620), (82, 980810), (164, 490405), (205, 392324), (410, 196162), (820, 98081)]