20978870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{190717}}^1$

素因数の和:190735

約数の個数: 16

約数和(自身を含む): 41195088

約数和(自身を除く): 20216218

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 190717, 381434, 953585, 1907170, 2097887, 4195774, 10489435, 20978870]

約数ペア:

[(1, 20978870), (2, 10489435), (5, 4195774), (10, 2097887), (11, 1907170), (22, 953585), (55, 381434), (110, 190717)]