21136860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117427}}^1$

素因数の和:117442

約数の個数: 36

約数和(自身を含む): 64115688

約数和(自身を除く): 42978828

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117427, 234854, 352281, 469708, 587135, 704562, 1056843, 1174270, 1409124, 1761405, 2113686, 2348540, 3522810, 4227372, 5284215, 7045620, 10568430, 21136860]

約数ペア:

[(1, 21136860), (2, 10568430), (3, 7045620), (4, 5284215), (5, 4227372), (6, 3522810), (9, 2348540), (10, 2113686), (12, 1761405), (15, 1409124), (18, 1174270), (20, 1056843), (30, 704562), (36, 587135), (45, 469708), (60, 352281), (90, 234854), (180, 117427)]