13988420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9851}}^1$

素因数の和:9931

約数の個数: 24

約数和(自身を含む): 29792448

約数和(自身を除く): 15804028

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 9851, 19702, 39404, 49255, 98510, 197020, 699421, 1398842, 2797684, 3497105, 6994210, 13988420]

約数ペア:

[(1, 13988420), (2, 6994210), (4, 3497105), (5, 2797684), (10, 1398842), (20, 699421), (71, 197020), (142, 98510), (284, 49255), (355, 39404), (710, 19702), (1420, 9851)]