20572748

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2441}}^1$

素因数の和:2502

約数の個数: 36

約数和(自身を含む): 42871752

約数和(自身を除く): 22299004

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 2441, 4214, 4882, 8428, 9764, 17087, 34174, 68348, 104963, 119609, 209926, 239218, 419852, 478436, 734741, 1469482, 2938964, 5143187, 10286374, 20572748]

約数ペア:

[(1, 20572748), (2, 10286374), (4, 5143187), (7, 2938964), (14, 1469482), (28, 734741), (43, 478436), (49, 419852), (86, 239218), (98, 209926), (172, 119609), (196, 104963), (301, 68348), (602, 34174), (1204, 17087), (2107, 9764), (2441, 8428), (4214, 4882)]