123478000

素因数分解:

$2^4\times 5^3\times {\mathrm{107}}^1\times {\mathrm{577}}^1$

素因数の和:707

約数の個数: 80

約数和(自身を含む): 301882464

約数和(自身を除く): 178404464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 107, 125, 200, 214, 250, 400, 428, 500, 535, 577, 856, 1000, 1070, 1154, 1712, 2000, 2140, 2308, 2675, 2885, 4280, 4616, 5350, 5770, 8560, 9232, 10700, 11540, 13375, 14425, 21400, 23080, 26750, 28850, 42800, 46160, 53500, 57700, 61739, 72125, 107000, 115400, 123478, 144250, 214000, 230800, 246956, 288500, 308695, 493912, 577000, 617390, 987824, 1154000, 1234780, 1543475, 2469560, 3086950, 4939120, 6173900, 7717375, 12347800, 15434750, 24695600, 30869500, 61739000, 123478000]

約数ペア:

[(1, 123478000), (2, 61739000), (4, 30869500), (5, 24695600), (8, 15434750), (10, 12347800), (16, 7717375), (20, 6173900), (25, 4939120), (40, 3086950), (50, 2469560), (80, 1543475), (100, 1234780), (107, 1154000), (125, 987824), (200, 617390), (214, 577000), (250, 493912), (400, 308695), (428, 288500), (500, 246956), (535, 230800), (577, 214000), (856, 144250), (1000, 123478), (1070, 115400), (1154, 107000), (1712, 72125), (2000, 61739), (2140, 57700), (2308, 53500), (2675, 46160), (2885, 42800), (4280, 28850), (4616, 26750), (5350, 23080), (5770, 21400), (8560, 14425), (9232, 13375), (10700, 11540)]