245999560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1607}}^1$

素因数の和:1750

約数の個数: 64

約数和(自身を含む): 573091200

約数和(自身を除く): 327091640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 712, 860, 890, 1607, 1720, 1780, 3214, 3560, 3827, 6428, 7654, 8035, 12856, 15308, 16070, 19135, 30616, 32140, 38270, 64280, 69101, 76540, 138202, 143023, 153080, 276404, 286046, 345505, 552808, 572092, 691010, 715115, 1144184, 1382020, 1430230, 2764040, 2860460, 5720920, 6149989, 12299978, 24599956, 30749945, 49199912, 61499890, 122999780, 245999560]

約数ペア:

[(1, 245999560), (2, 122999780), (4, 61499890), (5, 49199912), (8, 30749945), (10, 24599956), (20, 12299978), (40, 6149989), (43, 5720920), (86, 2860460), (89, 2764040), (172, 1430230), (178, 1382020), (215, 1144184), (344, 715115), (356, 691010), (430, 572092), (445, 552808), (712, 345505), (860, 286046), (890, 276404), (1607, 153080), (1720, 143023), (1780, 138202), (3214, 76540), (3560, 69101), (3827, 64280), (6428, 38270), (7654, 32140), (8035, 30616), (12856, 19135), (15308, 16070)]