21262887

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1987}}^1$

素因数の和:2063

約数の個数: 24

約数和(自身を含む): 32563440

約数和(自身を除く): 11300553

約数列:

[1, 3, 9, 29, 41, 87, 123, 261, 369, 1189, 1987, 3567, 5961, 10701, 17883, 57623, 81467, 172869, 244401, 518607, 733203, 2362543, 7087629, 21262887]

約数ペア:

[(1, 21262887), (3, 7087629), (9, 2362543), (29, 733203), (41, 518607), (87, 244401), (123, 172869), (261, 81467), (369, 57623), (1189, 17883), (1987, 10701), (3567, 5961)]