720661779

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{112621}}^1$

素因数の和:112712

約数の個数: 20

約数和(自身を含む): 1090180960

約数和(自身を除く): 369519181

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 6399, 112621, 337863, 1013589, 3040767, 8897059, 9122301, 26691177, 80073531, 240220593, 720661779]

約数ペア:

[(1, 720661779), (3, 240220593), (9, 80073531), (27, 26691177), (79, 9122301), (81, 8897059), (237, 3040767), (711, 1013589), (2133, 337863), (6399, 112621)]