20778164

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12763}}^1$

素因数の和:12815

約数の個数: 24

約数和(自身を含む): 40742688

約数和(自身を除く): 19964524

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12763, 25526, 51052, 140393, 280786, 472231, 561572, 944462, 1888924, 5194541, 10389082, 20778164]

約数ペア:

[(1, 20778164), (2, 10389082), (4, 5194541), (11, 1888924), (22, 944462), (37, 561572), (44, 472231), (74, 280786), (148, 140393), (407, 51052), (814, 25526), (1628, 12763)]