61920520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21803}}^1$

素因数の和:21885

約数の個数: 32

約数和(自身を含む): 141289920

約数和(自身を除く): 79369400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 21803, 43606, 87212, 109015, 174424, 218030, 436060, 872120, 1548013, 3096026, 6192052, 7740065, 12384104, 15480130, 30960260, 61920520]

約数ペア:

[(1, 61920520), (2, 30960260), (4, 15480130), (5, 12384104), (8, 7740065), (10, 6192052), (20, 3096026), (40, 1548013), (71, 872120), (142, 436060), (284, 218030), (355, 174424), (568, 109015), (710, 87212), (1420, 43606), (2840, 21803)]