81257640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{677147}}^1$

素因数の和:677161

約数の個数: 32

約数和(自身を含む): 243773280

約数和(自身を除く): 162515640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 677147, 1354294, 2031441, 2708588, 3385735, 4062882, 5417176, 6771470, 8125764, 10157205, 13542940, 16251528, 20314410, 27085880, 40628820, 81257640]

約数ペア:

[(1, 81257640), (2, 40628820), (3, 27085880), (4, 20314410), (5, 16251528), (6, 13542940), (8, 10157205), (10, 8125764), (12, 6771470), (15, 5417176), (20, 4062882), (24, 3385735), (30, 2708588), (40, 2031441), (60, 1354294), (120, 677147)]