21178564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2689}}^1$

素因数の和:2883

約数の個数: 24

約数和(自身を含む): 40672800

約数和(自身を除く): 19494236

約数列:

[1, 2, 4, 11, 22, 44, 179, 358, 716, 1969, 2689, 3938, 5378, 7876, 10756, 29579, 59158, 118316, 481331, 962662, 1925324, 5294641, 10589282, 21178564]

約数ペア:

[(1, 21178564), (2, 10589282), (4, 5294641), (11, 1925324), (22, 962662), (44, 481331), (179, 118316), (358, 59158), (716, 29579), (1969, 10756), (2689, 7876), (3938, 5378)]