19986800

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1723}}^1$

素因数の和:1770

約数の個数: 60

約数和(自身を含む): 49702920

約数和(自身を除く): 29716120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 145, 200, 232, 290, 400, 464, 580, 725, 1160, 1450, 1723, 2320, 2900, 3446, 5800, 6892, 8615, 11600, 13784, 17230, 27568, 34460, 43075, 49967, 68920, 86150, 99934, 137840, 172300, 199868, 249835, 344600, 399736, 499670, 689200, 799472, 999340, 1249175, 1998680, 2498350, 3997360, 4996700, 9993400, 19986800]

約数ペア:

[(1, 19986800), (2, 9993400), (4, 4996700), (5, 3997360), (8, 2498350), (10, 1998680), (16, 1249175), (20, 999340), (25, 799472), (29, 689200), (40, 499670), (50, 399736), (58, 344600), (80, 249835), (100, 199868), (116, 172300), (145, 137840), (200, 99934), (232, 86150), (290, 68920), (400, 49967), (464, 43075), (580, 34460), (725, 27568), (1160, 17230), (1450, 13784), (1723, 11600), (2320, 8615), (2900, 6892), (3446, 5800)]