17986220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{128473}}^1$

素因数の和:128489

約数の個数: 24

約数和(自身を含む): 43167264

約数和(自身を除く): 25181044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 128473, 256946, 513892, 642365, 899311, 1284730, 1798622, 2569460, 3597244, 4496555, 8993110, 17986220]

約数ペア:

[(1, 17986220), (2, 8993110), (4, 4496555), (5, 3597244), (7, 2569460), (10, 1798622), (14, 1284730), (20, 899311), (28, 642365), (35, 513892), (70, 256946), (140, 128473)]