128778900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{2179}}^1$

素因数の和:2393

約数の個数: 72

約数和(自身を含む): 374663520

約数和(自身を除く): 245884620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 197, 300, 394, 591, 788, 985, 1182, 1970, 2179, 2364, 2955, 3940, 4358, 4925, 5910, 6537, 8716, 9850, 10895, 11820, 13074, 14775, 19700, 21790, 26148, 29550, 32685, 43580, 54475, 59100, 65370, 108950, 130740, 163425, 217900, 326850, 429263, 653700, 858526, 1287789, 1717052, 2146315, 2575578, 4292630, 5151156, 6438945, 8585260, 10731575, 12877890, 21463150, 25755780, 32194725, 42926300, 64389450, 128778900]

約数ペア:

[(1, 128778900), (2, 64389450), (3, 42926300), (4, 32194725), (5, 25755780), (6, 21463150), (10, 12877890), (12, 10731575), (15, 8585260), (20, 6438945), (25, 5151156), (30, 4292630), (50, 2575578), (60, 2146315), (75, 1717052), (100, 1287789), (150, 858526), (197, 653700), (300, 429263), (394, 326850), (591, 217900), (788, 163425), (985, 130740), (1182, 108950), (1970, 65370), (2179, 59100), (2364, 54475), (2955, 43580), (3940, 32685), (4358, 29550), (4925, 26148), (5910, 21790), (6537, 19700), (8716, 14775), (9850, 13074), (10895, 11820)]