87918440

素因数分解:

$2^3\times 5^1\times {\mathrm{2197961}}^1$

素因数の和:2197972

約数の個数: 16

約数和(自身を含む): 197816580

約数和(自身を除く): 109898140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2197961, 4395922, 8791844, 10989805, 17583688, 21979610, 43959220, 87918440]

約数ペア:

[(1, 87918440), (2, 43959220), (4, 21979610), (5, 17583688), (8, 10989805), (10, 8791844), (20, 4395922), (40, 2197961)]