20871676

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5441}}^1$

素因数の和:5589

約数の個数: 24

約数和(自身を含む): 42055776

約数和(自身を除く): 21184100

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5441, 10882, 21764, 38087, 76174, 152348, 745417, 1490834, 2981668, 5217919, 10435838, 20871676]

約数ペア:

[(1, 20871676), (2, 10435838), (4, 5217919), (7, 2981668), (14, 1490834), (28, 745417), (137, 152348), (274, 76174), (548, 38087), (959, 21764), (1918, 10882), (3836, 5441)]