19718090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40241}}^1$

素因数の和:40262

約数の個数: 24

約数和(自身を含む): 41288292

約数和(自身を除く): 21570202

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40241, 80482, 201205, 281687, 402410, 563374, 1408435, 1971809, 2816870, 3943618, 9859045, 19718090]

約数ペア:

[(1, 19718090), (2, 9859045), (5, 3943618), (7, 2816870), (10, 1971809), (14, 1408435), (35, 563374), (49, 402410), (70, 281687), (98, 201205), (245, 80482), (490, 40241)]