80811575

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:684

約数の個数: 36

約数和(自身を含む): 112189248

約数和(自身を除く): 31377673

約数列:

[1, 5, 13, 25, 31, 65, 155, 169, 325, 403, 617, 775, 845, 2015, 3085, 4225, 5239, 8021, 10075, 15425, 19127, 26195, 40105, 95635, 104273, 130975, 200525, 248651, 478175, 521365, 1243255, 2606825, 3232463, 6216275, 16162315, 80811575]

約数ペア:

[(1, 80811575), (5, 16162315), (13, 6216275), (25, 3232463), (31, 2606825), (65, 1243255), (155, 521365), (169, 478175), (325, 248651), (403, 200525), (617, 130975), (775, 104273), (845, 95635), (2015, 40105), (3085, 26195), (4225, 19127), (5239, 15425), (8021, 10075)]