21316740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{12251}}^1$

素因数の和:12292

約数の個数: 48

約数和(自身を含む): 61750080

約数和(自身を除く): 40433340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 12251, 24502, 36753, 49004, 61255, 73506, 122510, 147012, 183765, 245020, 355279, 367530, 710558, 735060, 1065837, 1421116, 1776395, 2131674, 3552790, 4263348, 5329185, 7105580, 10658370, 21316740]

約数ペア:

[(1, 21316740), (2, 10658370), (3, 7105580), (4, 5329185), (5, 4263348), (6, 3552790), (10, 2131674), (12, 1776395), (15, 1421116), (20, 1065837), (29, 735060), (30, 710558), (58, 367530), (60, 355279), (87, 245020), (116, 183765), (145, 147012), (174, 122510), (290, 73506), (348, 61255), (435, 49004), (580, 36753), (870, 24502), (1740, 12251)]