21872690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1619}}^1$

素因数の和:1826

約数の個数: 32

約数和(自身を含む): 45256320

約数和(自身を除く): 23383630

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 193, 386, 965, 1351, 1619, 1930, 2702, 3238, 6755, 8095, 11333, 13510, 16190, 22666, 56665, 113330, 312467, 624934, 1562335, 2187269, 3124670, 4374538, 10936345, 21872690]

約数ペア:

[(1, 21872690), (2, 10936345), (5, 4374538), (7, 3124670), (10, 2187269), (14, 1562335), (35, 624934), (70, 312467), (193, 113330), (386, 56665), (965, 22666), (1351, 16190), (1619, 13510), (1930, 11333), (2702, 8095), (3238, 6755)]