20842540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33617}}^1$

素因数の和:33657

約数の個数: 24

約数和(自身を含む): 45182592

約数和(自身を除く): 24340052

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33617, 67234, 134468, 168085, 336170, 672340, 1042127, 2084254, 4168508, 5210635, 10421270, 20842540]

約数ペア:

[(1, 20842540), (2, 10421270), (4, 5210635), (5, 4168508), (10, 2084254), (20, 1042127), (31, 672340), (62, 336170), (124, 168085), (155, 134468), (310, 67234), (620, 33617)]