20005407

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 10637793

約数列:

[1, 3, 9, 27, 79, 83, 113, 237, 249, 339, 711, 747, 1017, 2133, 2241, 3051, 6557, 8927, 9379, 19671, 26781, 28137, 59013, 80343, 84411, 177039, 241029, 253233, 740941, 2222823, 6668469, 20005407]

約数ペア:

[(1, 20005407), (3, 6668469), (9, 2222823), (27, 740941), (79, 253233), (83, 241029), (113, 177039), (237, 84411), (249, 80343), (339, 59013), (711, 28137), (747, 26781), (1017, 19671), (2133, 9379), (2241, 8927), (3051, 6557)]