287489718

素因数分解:

$2^1\times 3^2\times {\mathrm{131}}^1\times {\mathrm{121921}}^1$

素因数の和:122060

約数の個数: 24

約数和(自身を含む): 627654456

約数和(自身を除く): 340164738

約数列:

[1, 2, 3, 6, 9, 18, 131, 262, 393, 786, 1179, 2358, 121921, 243842, 365763, 731526, 1097289, 2194578, 15971651, 31943302, 47914953, 95829906, 143744859, 287489718]

約数ペア:

[(1, 287489718), (2, 143744859), (3, 95829906), (6, 47914953), (9, 31943302), (18, 15971651), (131, 2194578), (262, 1097289), (393, 731526), (786, 365763), (1179, 243842), (2358, 121921)]