79911920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1$

素因数の和:1374

約数の個数: 80

約数和(自身を含む): 205701120

約数和(自身を除く): 125789200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1279, 1420, 1562, 2558, 2840, 3124, 3905, 5116, 5680, 6248, 6395, 7810, 10232, 12496, 12790, 14069, 15620, 20464, 25580, 28138, 31240, 51160, 56276, 62480, 70345, 90809, 102320, 112552, 140690, 181618, 225104, 281380, 363236, 454045, 562760, 726472, 908090, 998899, 1125520, 1452944, 1816180, 1997798, 3632360, 3995596, 4994495, 7264720, 7991192, 9988990, 15982384, 19977980, 39955960, 79911920]

約数ペア:

[(1, 79911920), (2, 39955960), (4, 19977980), (5, 15982384), (8, 9988990), (10, 7991192), (11, 7264720), (16, 4994495), (20, 3995596), (22, 3632360), (40, 1997798), (44, 1816180), (55, 1452944), (71, 1125520), (80, 998899), (88, 908090), (110, 726472), (142, 562760), (176, 454045), (220, 363236), (284, 281380), (355, 225104), (440, 181618), (568, 140690), (710, 112552), (781, 102320), (880, 90809), (1136, 70345), (1279, 62480), (1420, 56276), (1562, 51160), (2558, 31240), (2840, 28138), (3124, 25580), (3905, 20464), (5116, 15620), (5680, 14069), (6248, 12790), (6395, 12496), (7810, 10232)]