256569920

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2221}}^1$

素因数の和:2276

約数の個数: 84

約数和(自身を含む): 645095484

約数和(自身を除く): 388525564

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 361, 380, 608, 722, 760, 1216, 1444, 1520, 1805, 2221, 2888, 3040, 3610, 4442, 5776, 6080, 7220, 8884, 11105, 11552, 14440, 17768, 22210, 23104, 28880, 35536, 42199, 44420, 57760, 71072, 84398, 88840, 115520, 142144, 168796, 177680, 210995, 337592, 355360, 421990, 675184, 710720, 801781, 843980, 1350368, 1603562, 1687960, 2700736, 3207124, 3375920, 4008905, 6414248, 6751840, 8017810, 12828496, 13503680, 16035620, 25656992, 32071240, 51313984, 64142480, 128284960, 256569920]

約数ペア:

[(1, 256569920), (2, 128284960), (4, 64142480), (5, 51313984), (8, 32071240), (10, 25656992), (16, 16035620), (19, 13503680), (20, 12828496), (32, 8017810), (38, 6751840), (40, 6414248), (64, 4008905), (76, 3375920), (80, 3207124), (95, 2700736), (152, 1687960), (160, 1603562), (190, 1350368), (304, 843980), (320, 801781), (361, 710720), (380, 675184), (608, 421990), (722, 355360), (760, 337592), (1216, 210995), (1444, 177680), (1520, 168796), (1805, 142144), (2221, 115520), (2888, 88840), (3040, 84398), (3610, 71072), (4442, 57760), (5776, 44420), (6080, 42199), (7220, 35536), (8884, 28880), (11105, 23104), (11552, 22210), (14440, 17768)]