21694876

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 45692416

約数和(自身を除く): 23997540

約数列:

[1, 2, 4, 7, 14, 28, 37, 43, 74, 86, 148, 172, 259, 301, 487, 518, 602, 974, 1036, 1204, 1591, 1948, 3182, 3409, 6364, 6818, 11137, 13636, 18019, 20941, 22274, 36038, 41882, 44548, 72076, 83764, 126133, 146587, 252266, 293174, 504532, 586348, 774817, 1549634, 3099268, 5423719, 10847438, 21694876]

約数ペア:

[(1, 21694876), (2, 10847438), (4, 5423719), (7, 3099268), (14, 1549634), (28, 774817), (37, 586348), (43, 504532), (74, 293174), (86, 252266), (148, 146587), (172, 126133), (259, 83764), (301, 72076), (487, 44548), (518, 41882), (602, 36038), (974, 22274), (1036, 20941), (1204, 18019), (1591, 13636), (1948, 11137), (3182, 6818), (3409, 6364)]