20915178

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{739}}^1$

素因数の和:886

約数の個数: 32

約数和(自身を含む): 43156800

約数和(自身を除く): 22241622

約数列:

[1, 2, 3, 6, 53, 89, 106, 159, 178, 267, 318, 534, 739, 1478, 2217, 4434, 4717, 9434, 14151, 28302, 39167, 65771, 78334, 117501, 131542, 197313, 235002, 394626, 3485863, 6971726, 10457589, 20915178]

約数ペア:

[(1, 20915178), (2, 10457589), (3, 6971726), (6, 3485863), (53, 394626), (89, 235002), (106, 197313), (159, 131542), (178, 117501), (267, 78334), (318, 65771), (534, 39167), (739, 28302), (1478, 14151), (2217, 9434), (4434, 4717)]