18138680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{64781}}^1$

素因数の和:64799

約数の個数: 32

約数和(自身を含む): 46643040

約数和(自身を除く): 28504360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 64781, 129562, 259124, 323905, 453467, 518248, 647810, 906934, 1295620, 1813868, 2267335, 2591240, 3627736, 4534670, 9069340, 18138680]

約数ペア:

[(1, 18138680), (2, 9069340), (4, 4534670), (5, 3627736), (7, 2591240), (8, 2267335), (10, 1813868), (14, 1295620), (20, 906934), (28, 647810), (35, 518248), (40, 453467), (56, 323905), (70, 259124), (140, 129562), (280, 64781)]