18405380

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2683}}^1$

素因数の和:2713

約数の個数: 48

約数和(自身を含む): 45091200

約数和(自身を除く): 26685820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2683, 3430, 5366, 6860, 10732, 13415, 18781, 26830, 37562, 53660, 75124, 93905, 131467, 187810, 262934, 375620, 525868, 657335, 920269, 1314670, 1840538, 2629340, 3681076, 4601345, 9202690, 18405380]

約数ペア:

[(1, 18405380), (2, 9202690), (4, 4601345), (5, 3681076), (7, 2629340), (10, 1840538), (14, 1314670), (20, 920269), (28, 657335), (35, 525868), (49, 375620), (70, 262934), (98, 187810), (140, 131467), (196, 93905), (245, 75124), (343, 53660), (490, 37562), (686, 26830), (980, 18781), (1372, 13415), (1715, 10732), (2683, 6860), (3430, 5366)]