68732920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:592

約数の個数: 64

約数和(自身を含む): 160380000

約数和(自身を除く): 91647080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 449, 712, 860, 890, 898, 1720, 1780, 1796, 2245, 3560, 3592, 3827, 4490, 7654, 8980, 15308, 17960, 19135, 19307, 30616, 38270, 38614, 39961, 76540, 77228, 79922, 96535, 153080, 154456, 159844, 193070, 199805, 319688, 386140, 399610, 772280, 799220, 1598440, 1718323, 3436646, 6873292, 8591615, 13746584, 17183230, 34366460, 68732920]

約数ペア:

[(1, 68732920), (2, 34366460), (4, 17183230), (5, 13746584), (8, 8591615), (10, 6873292), (20, 3436646), (40, 1718323), (43, 1598440), (86, 799220), (89, 772280), (172, 399610), (178, 386140), (215, 319688), (344, 199805), (356, 193070), (430, 159844), (445, 154456), (449, 153080), (712, 96535), (860, 79922), (890, 77228), (898, 76540), (1720, 39961), (1780, 38614), (1796, 38270), (2245, 30616), (3560, 19307), (3592, 19135), (3827, 17960), (4490, 15308), (7654, 8980)]