20962690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 44323200

約数和(自身を除く): 23360510

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 179, 239, 245, 358, 478, 490, 895, 1195, 1253, 1673, 1790, 2390, 2506, 3346, 6265, 8365, 8771, 11711, 12530, 16730, 17542, 23422, 42781, 43855, 58555, 85562, 87710, 117110, 213905, 299467, 427810, 598934, 1497335, 2096269, 2994670, 4192538, 10481345, 20962690]

約数ペア:

[(1, 20962690), (2, 10481345), (5, 4192538), (7, 2994670), (10, 2096269), (14, 1497335), (35, 598934), (49, 427810), (70, 299467), (98, 213905), (179, 117110), (239, 87710), (245, 85562), (358, 58555), (478, 43855), (490, 42781), (895, 23422), (1195, 17542), (1253, 16730), (1673, 12530), (1790, 11711), (2390, 8771), (2506, 8365), (3346, 6265)]