21032740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61861}}^1$

素因数の和:61887

約数の個数: 24

約数和(自身を含む): 46767672

約数和(自身を除く): 25734932

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61861, 123722, 247444, 309305, 618610, 1051637, 1237220, 2103274, 4206548, 5258185, 10516370, 21032740]

約数ペア:

[(1, 21032740), (2, 10516370), (4, 5258185), (5, 4206548), (10, 2103274), (17, 1237220), (20, 1051637), (34, 618610), (68, 309305), (85, 247444), (170, 123722), (340, 61861)]