21690140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{29311}}^1$

素因数の和:29357

約数の個数: 24

約数和(自身を含む): 46781952

約数和(自身を除く): 25091812

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 29311, 58622, 117244, 146555, 293110, 586220, 1084507, 2169014, 4338028, 5422535, 10845070, 21690140]

約数ペア:

[(1, 21690140), (2, 10845070), (4, 5422535), (5, 4338028), (10, 2169014), (20, 1084507), (37, 586220), (74, 293110), (148, 146555), (185, 117244), (370, 58622), (740, 29311)]