21795740

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8581}}^1$

素因数の和:8717

約数の個数: 24

約数和(自身を含む): 46136832

約数和(自身を除く): 24341092

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8581, 17162, 34324, 42905, 85810, 171620, 1089787, 2179574, 4359148, 5448935, 10897870, 21795740]

約数ペア:

[(1, 21795740), (2, 10897870), (4, 5448935), (5, 4359148), (10, 2179574), (20, 1089787), (127, 171620), (254, 85810), (508, 42905), (635, 34324), (1270, 17162), (2540, 8581)]