139576760

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{5279}}^1$

素因数の和:5951

約数の個数: 32

約数和(自身を含む): 314582400

約数和(自身を除く): 175005640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5279, 5288, 6610, 10558, 13220, 21116, 26395, 26440, 42232, 52790, 105580, 211160, 3489419, 6978838, 13957676, 17447095, 27915352, 34894190, 69788380, 139576760]

約数ペア:

[(1, 139576760), (2, 69788380), (4, 34894190), (5, 27915352), (8, 17447095), (10, 13957676), (20, 6978838), (40, 3489419), (661, 211160), (1322, 105580), (2644, 52790), (3305, 42232), (5279, 26440), (5288, 26395), (6610, 21116), (10558, 13220)]