80681375

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:536

約数の個数: 32

約数和(自身を含む): 106389504

約数和(自身を除く): 25708129

約数列:

[1, 5, 25, 31, 47, 125, 155, 235, 443, 775, 1175, 1457, 2215, 3875, 5875, 7285, 11075, 13733, 20821, 36425, 55375, 68665, 104105, 182125, 343325, 520525, 645451, 1716625, 2602625, 3227255, 16136275, 80681375]

約数ペア:

[(1, 80681375), (5, 16136275), (25, 3227255), (31, 2602625), (47, 1716625), (125, 645451), (155, 520525), (235, 343325), (443, 182125), (775, 104105), (1175, 68665), (1457, 55375), (2215, 36425), (3875, 20821), (5875, 13733), (7285, 11075)]