256364240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{919}}^1$

素因数の和:1260

約数の個数: 80

約数和(自身を含む): 652993920

約数和(自身を除く): 396629680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 317, 440, 634, 880, 919, 1268, 1585, 1838, 2536, 3170, 3487, 3676, 4595, 5072, 6340, 6974, 7352, 9190, 10109, 12680, 13948, 14704, 17435, 18380, 20218, 25360, 27896, 34870, 36760, 40436, 50545, 55792, 69740, 73520, 80872, 101090, 139480, 161744, 202180, 278960, 291323, 404360, 582646, 808720, 1165292, 1456615, 2330584, 2913230, 3204553, 4661168, 5826460, 6409106, 11652920, 12818212, 16022765, 23305840, 25636424, 32045530, 51272848, 64091060, 128182120, 256364240]

約数ペア:

[(1, 256364240), (2, 128182120), (4, 64091060), (5, 51272848), (8, 32045530), (10, 25636424), (11, 23305840), (16, 16022765), (20, 12818212), (22, 11652920), (40, 6409106), (44, 5826460), (55, 4661168), (80, 3204553), (88, 2913230), (110, 2330584), (176, 1456615), (220, 1165292), (317, 808720), (440, 582646), (634, 404360), (880, 291323), (919, 278960), (1268, 202180), (1585, 161744), (1838, 139480), (2536, 101090), (3170, 80872), (3487, 73520), (3676, 69740), (4595, 55792), (5072, 50545), (6340, 40436), (6974, 36760), (7352, 34870), (9190, 27896), (10109, 25360), (12680, 20218), (13948, 18380), (14704, 17435)]