21407708

素因数分解:

$2^2\times 7^2\times {\mathrm{239}}^1\times {\mathrm{457}}^1$

素因数の和:714

約数の個数: 36

約数和(自身を含む): 43858080

約数和(自身を除く): 22450372

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 239, 457, 478, 914, 956, 1673, 1828, 3199, 3346, 6398, 6692, 11711, 12796, 22393, 23422, 44786, 46844, 89572, 109223, 218446, 436892, 764561, 1529122, 3058244, 5351927, 10703854, 21407708]

約数ペア:

[(1, 21407708), (2, 10703854), (4, 5351927), (7, 3058244), (14, 1529122), (28, 764561), (49, 436892), (98, 218446), (196, 109223), (239, 89572), (457, 46844), (478, 44786), (914, 23422), (956, 22393), (1673, 12796), (1828, 11711), (3199, 6692), (3346, 6398)]