178748721

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{5309}}^1$

素因数の和:5390

約数の個数: 32

約数和(自身を含む): 280368000

約数和(自身を除く): 101619279

約数列:

[1, 3, 9, 27, 29, 43, 87, 129, 261, 387, 783, 1161, 1247, 3741, 5309, 11223, 15927, 33669, 47781, 143343, 153961, 228287, 461883, 684861, 1385649, 2054583, 4156947, 6163749, 6620323, 19860969, 59582907, 178748721]

約数ペア:

[(1, 178748721), (3, 59582907), (9, 19860969), (27, 6620323), (29, 6163749), (43, 4156947), (87, 2054583), (129, 1385649), (261, 684861), (387, 461883), (783, 228287), (1161, 153961), (1247, 143343), (3741, 47781), (5309, 33669), (11223, 15927)]