249903100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{653}}^1$

素因数の和:799

約数の個数: 72

約数和(自身を含む): 561995280

約数和(自身を除く): 312092180

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 89, 100, 172, 178, 215, 356, 430, 445, 653, 860, 890, 1075, 1306, 1780, 2150, 2225, 2612, 3265, 3827, 4300, 4450, 6530, 7654, 8900, 13060, 15308, 16325, 19135, 28079, 32650, 38270, 56158, 58117, 65300, 76540, 95675, 112316, 116234, 140395, 191350, 232468, 280790, 290585, 382700, 561580, 581170, 701975, 1162340, 1403950, 1452925, 2499031, 2807900, 2905850, 4998062, 5811700, 9996124, 12495155, 24990310, 49980620, 62475775, 124951550, 249903100]

約数ペア:

[(1, 249903100), (2, 124951550), (4, 62475775), (5, 49980620), (10, 24990310), (20, 12495155), (25, 9996124), (43, 5811700), (50, 4998062), (86, 2905850), (89, 2807900), (100, 2499031), (172, 1452925), (178, 1403950), (215, 1162340), (356, 701975), (430, 581170), (445, 561580), (653, 382700), (860, 290585), (890, 280790), (1075, 232468), (1306, 191350), (1780, 140395), (2150, 116234), (2225, 112316), (2612, 95675), (3265, 76540), (3827, 65300), (4300, 58117), (4450, 56158), (6530, 38270), (7654, 32650), (8900, 28079), (13060, 19135), (15308, 16325)]