20881505

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{2753}}^1$

素因数の和:2836

約数の個数: 16

約数和(自身を含む): 26372304

約数和(自身を除く): 5490799

約数列:

[1, 5, 37, 41, 185, 205, 1517, 2753, 7585, 13765, 101861, 112873, 509305, 564365, 4176301, 20881505]

約数ペア:

[(1, 20881505), (5, 4176301), (37, 564365), (41, 509305), (185, 112873), (205, 101861), (1517, 13765), (2753, 7585)]