20155870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{9929}}^1$

素因数の和:9972

約数の個数: 32

約数和(自身を含む): 42897600

約数和(自身を除く): 22741730

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 9929, 19858, 49645, 69503, 99290, 139006, 287941, 347515, 575882, 695030, 1439705, 2015587, 2879410, 4031174, 10077935, 20155870]

約数ペア:

[(1, 20155870), (2, 10077935), (5, 4031174), (7, 2879410), (10, 2015587), (14, 1439705), (29, 695030), (35, 575882), (58, 347515), (70, 287941), (145, 139006), (203, 99290), (290, 69503), (406, 49645), (1015, 19858), (2030, 9929)]