21586060

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 46781280

約数和(自身を除く): 25195220

約数列:

[1, 2, 4, 5, 10, 20, 67, 89, 134, 178, 181, 268, 335, 356, 362, 445, 670, 724, 890, 905, 1340, 1780, 1810, 3620, 5963, 11926, 12127, 16109, 23852, 24254, 29815, 32218, 48508, 59630, 60635, 64436, 80545, 119260, 121270, 161090, 242540, 322180, 1079303, 2158606, 4317212, 5396515, 10793030, 21586060]

約数ペア:

[(1, 21586060), (2, 10793030), (4, 5396515), (5, 4317212), (10, 2158606), (20, 1079303), (67, 322180), (89, 242540), (134, 161090), (178, 121270), (181, 119260), (268, 80545), (335, 64436), (356, 60635), (362, 59630), (445, 48508), (670, 32218), (724, 29815), (890, 24254), (905, 23852), (1340, 16109), (1780, 12127), (1810, 11926), (3620, 5963)]