39955960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1$

素因数の和:1372

約数の個数: 64

約数和(自身を含む): 99532800

約数和(自身を除く): 59576840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1279, 1420, 1562, 2558, 2840, 3124, 3905, 5116, 6248, 6395, 7810, 10232, 12790, 14069, 15620, 25580, 28138, 31240, 51160, 56276, 70345, 90809, 112552, 140690, 181618, 281380, 363236, 454045, 562760, 726472, 908090, 998899, 1816180, 1997798, 3632360, 3995596, 4994495, 7991192, 9988990, 19977980, 39955960]

約数ペア:

[(1, 39955960), (2, 19977980), (4, 9988990), (5, 7991192), (8, 4994495), (10, 3995596), (11, 3632360), (20, 1997798), (22, 1816180), (40, 998899), (44, 908090), (55, 726472), (71, 562760), (88, 454045), (110, 363236), (142, 281380), (220, 181618), (284, 140690), (355, 112552), (440, 90809), (568, 70345), (710, 56276), (781, 51160), (1279, 31240), (1420, 28138), (1562, 25580), (2558, 15620), (2840, 14069), (3124, 12790), (3905, 10232), (5116, 7810), (6248, 6395)]