80778020

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{9371}}^1$

素因数の和:9811

約数の個数: 24

約数和(自身を含む): 170045568

約数和(自身を除く): 89267548

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 8620, 9371, 18742, 37484, 46855, 93710, 187420, 4038901, 8077802, 16155604, 20194505, 40389010, 80778020]

約数ペア:

[(1, 80778020), (2, 40389010), (4, 20194505), (5, 16155604), (10, 8077802), (20, 4038901), (431, 187420), (862, 93710), (1724, 46855), (2155, 37484), (4310, 18742), (8620, 9371)]