80002760

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9479}}^1$

素因数の和:9701

約数の個数: 32

約数和(自身を含む): 180878400

約数和(自身を除く): 100875640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 9479, 18958, 37916, 47395, 75832, 94790, 189580, 379160, 2000069, 4000138, 8000276, 10000345, 16000552, 20000690, 40001380, 80002760]

約数ペア:

[(1, 80002760), (2, 40001380), (4, 20000690), (5, 16000552), (8, 10000345), (10, 8000276), (20, 4000138), (40, 2000069), (211, 379160), (422, 189580), (844, 94790), (1055, 75832), (1688, 47395), (2110, 37916), (4220, 18958), (8440, 9479)]