21139740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117443}}^1$

素因数の和:117458

約数の個数: 36

約数和(自身を含む): 64124424

約数和(自身を除く): 42984684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117443, 234886, 352329, 469772, 587215, 704658, 1056987, 1174430, 1409316, 1761645, 2113974, 2348860, 3523290, 4227948, 5284935, 7046580, 10569870, 21139740]

約数ペア:

[(1, 21139740), (2, 10569870), (3, 7046580), (4, 5284935), (5, 4227948), (6, 3523290), (9, 2348860), (10, 2113974), (12, 1761645), (15, 1409316), (18, 1174430), (20, 1056987), (30, 704658), (36, 587215), (45, 469772), (60, 352329), (90, 234886), (180, 117443)]