129713020

素因数分解:

$2^2\times 5^1\times {\mathrm{1601}}^1\times {\mathrm{4051}}^1$

素因数の和:5661

約数の個数: 24

約数和(自身を含む): 272634768

約数和(自身を除く): 142921748

約数列:

[1, 2, 4, 5, 10, 20, 1601, 3202, 4051, 6404, 8005, 8102, 16010, 16204, 20255, 32020, 40510, 81020, 6485651, 12971302, 25942604, 32428255, 64856510, 129713020]

約数ペア:

[(1, 129713020), (2, 64856510), (4, 32428255), (5, 25942604), (10, 12971302), (20, 6485651), (1601, 81020), (3202, 40510), (4051, 32020), (6404, 20255), (8005, 16204), (8102, 16010)]