20398860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113327}}^1$

素因数の和:113342

約数の個数: 36

約数和(自身を含む): 61877088

約数和(自身を除く): 41478228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 113327, 226654, 339981, 453308, 566635, 679962, 1019943, 1133270, 1359924, 1699905, 2039886, 2266540, 3399810, 4079772, 5099715, 6799620, 10199430, 20398860]

約数ペア:

[(1, 20398860), (2, 10199430), (3, 6799620), (4, 5099715), (5, 4079772), (6, 3399810), (9, 2266540), (10, 2039886), (12, 1699905), (15, 1359924), (18, 1133270), (20, 1019943), (30, 679962), (36, 566635), (45, 453308), (60, 339981), (90, 226654), (180, 113327)]