9781520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17467}}^1$

素因数の和:17487

約数の個数: 40

約数和(自身を含む): 25992384

約数和(自身を除く): 16210864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 17467, 34934, 69868, 87335, 122269, 139736, 174670, 244538, 279472, 349340, 489076, 611345, 698680, 978152, 1222690, 1397360, 1956304, 2445380, 4890760, 9781520]

約数ペア:

[(1, 9781520), (2, 4890760), (4, 2445380), (5, 1956304), (7, 1397360), (8, 1222690), (10, 978152), (14, 698680), (16, 611345), (20, 489076), (28, 349340), (35, 279472), (40, 244538), (56, 174670), (70, 139736), (80, 122269), (112, 87335), (140, 69868), (280, 34934), (560, 17467)]