19902480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6379}}^1$

素因数の和:6408

約数の個数: 80

約数和(自身を含む): 66454080

約数和(自身を除く): 46551600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6379, 12758, 19137, 25516, 31895, 38274, 51032, 63790, 76548, 82927, 95685, 102064, 127580, 153096, 165854, 191370, 248781, 255160, 306192, 331708, 382740, 414635, 497562, 510320, 663416, 765480, 829270, 995124, 1243905, 1326832, 1530960, 1658540, 1990248, 2487810, 3317080, 3980496, 4975620, 6634160, 9951240, 19902480]

約数ペア:

[(1, 19902480), (2, 9951240), (3, 6634160), (4, 4975620), (5, 3980496), (6, 3317080), (8, 2487810), (10, 1990248), (12, 1658540), (13, 1530960), (15, 1326832), (16, 1243905), (20, 995124), (24, 829270), (26, 765480), (30, 663416), (39, 510320), (40, 497562), (48, 414635), (52, 382740), (60, 331708), (65, 306192), (78, 255160), (80, 248781), (104, 191370), (120, 165854), (130, 153096), (156, 127580), (195, 102064), (208, 95685), (240, 82927), (260, 76548), (312, 63790), (390, 51032), (520, 38274), (624, 31895), (780, 25516), (1040, 19137), (1560, 12758), (3120, 6379)]