78641020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{55381}}^1$

素因数の和:55461

約数の個数: 24

約数和(自身を含む): 167475168

約数和(自身を除く): 88834148

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 55381, 110762, 221524, 276905, 553810, 1107620, 3932051, 7864102, 15728204, 19660255, 39320510, 78641020]

約数ペア:

[(1, 78641020), (2, 39320510), (4, 19660255), (5, 15728204), (10, 7864102), (20, 3932051), (71, 1107620), (142, 553810), (284, 276905), (355, 221524), (710, 110762), (1420, 55381)]