390089620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{274711}}^1$

素因数の和:274791

約数の個数: 24

約数和(自身を含む): 830729088

約数和(自身を除く): 440639468

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 274711, 549422, 1098844, 1373555, 2747110, 5494220, 19504481, 39008962, 78017924, 97522405, 195044810, 390089620]

約数ペア:

[(1, 390089620), (2, 195044810), (4, 97522405), (5, 78017924), (10, 39008962), (20, 19504481), (71, 5494220), (142, 2747110), (284, 1373555), (355, 1098844), (710, 549422), (1420, 274711)]