21190860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117727}}^1$

素因数の和:117742

約数の個数: 36

約数和(自身を含む): 64279488

約数和(自身を除く): 43088628

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117727, 235454, 353181, 470908, 588635, 706362, 1059543, 1177270, 1412724, 1765905, 2119086, 2354540, 3531810, 4238172, 5297715, 7063620, 10595430, 21190860]

約数ペア:

[(1, 21190860), (2, 10595430), (3, 7063620), (4, 5297715), (5, 4238172), (6, 3531810), (9, 2354540), (10, 2119086), (12, 1765905), (15, 1412724), (18, 1177270), (20, 1059543), (30, 706362), (36, 588635), (45, 470908), (60, 353181), (90, 235454), (180, 117727)]