18971440

素因数分解:

$2^4\times 5^1\times {\mathrm{237143}}^1$

素因数の和:237156

約数の個数: 20

約数和(自身を含む): 44108784

約数和(自身を除く): 25137344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 237143, 474286, 948572, 1185715, 1897144, 2371430, 3794288, 4742860, 9485720, 18971440]

約数ペア:

[(1, 18971440), (2, 9485720), (4, 4742860), (5, 3794288), (8, 2371430), (10, 1897144), (16, 1185715), (20, 948572), (40, 474286), (80, 237143)]