128462020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{3821}}^1$

素因数の和:3912

約数の個数: 36

約数和(自身を含む): 276582852

約数和(自身を除く): 148120832

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1681, 3362, 3821, 6724, 7642, 8405, 15284, 16810, 19105, 33620, 38210, 76420, 156661, 313322, 626644, 783305, 1566610, 3133220, 6423101, 12846202, 25692404, 32115505, 64231010, 128462020]

約数ペア:

[(1, 128462020), (2, 64231010), (4, 32115505), (5, 25692404), (10, 12846202), (20, 6423101), (41, 3133220), (82, 1566610), (164, 783305), (205, 626644), (410, 313322), (820, 156661), (1681, 76420), (3362, 38210), (3821, 33620), (6724, 19105), (7642, 16810), (8405, 15284)]