21386764

素因数分解:

$2^2\times 7^1\times {\mathrm{757}}^1\times {\mathrm{1009}}^1$

素因数の和:1777

約数の個数: 24

約数和(自身を含む): 42872480

約数和(自身を除く): 21485716

約数列:

[1, 2, 4, 7, 14, 28, 757, 1009, 1514, 2018, 3028, 4036, 5299, 7063, 10598, 14126, 21196, 28252, 763813, 1527626, 3055252, 5346691, 10693382, 21386764]

約数ペア:

[(1, 21386764), (2, 10693382), (4, 5346691), (7, 3055252), (14, 1527626), (28, 763813), (757, 28252), (1009, 21196), (1514, 14126), (2018, 10598), (3028, 7063), (4036, 5299)]