20980124

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{4721}}^1$

素因数の和:4837

約数の個数: 24

約数和(自身を含む): 40458096

約数和(自身を除く): 19477972

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 404, 1111, 2222, 4444, 4721, 9442, 18884, 51931, 103862, 207724, 476821, 953642, 1907284, 5245031, 10490062, 20980124]

約数ペア:

[(1, 20980124), (2, 10490062), (4, 5245031), (11, 1907284), (22, 953642), (44, 476821), (101, 207724), (202, 103862), (404, 51931), (1111, 18884), (2222, 9442), (4444, 4721)]