201912520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1319}}^1$

素因数の和:1462

約数の個数: 64

約数和(自身を含む): 470448000

約数和(自身を除く): 268535480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 712, 860, 890, 1319, 1720, 1780, 2638, 3560, 3827, 5276, 6595, 7654, 10552, 13190, 15308, 19135, 26380, 30616, 38270, 52760, 56717, 76540, 113434, 117391, 153080, 226868, 234782, 283585, 453736, 469564, 567170, 586955, 939128, 1134340, 1173910, 2268680, 2347820, 4695640, 5047813, 10095626, 20191252, 25239065, 40382504, 50478130, 100956260, 201912520]

約数ペア:

[(1, 201912520), (2, 100956260), (4, 50478130), (5, 40382504), (8, 25239065), (10, 20191252), (20, 10095626), (40, 5047813), (43, 4695640), (86, 2347820), (89, 2268680), (172, 1173910), (178, 1134340), (215, 939128), (344, 586955), (356, 567170), (430, 469564), (445, 453736), (712, 283585), (860, 234782), (890, 226868), (1319, 153080), (1720, 117391), (1780, 113434), (2638, 76540), (3560, 56717), (3827, 52760), (5276, 38270), (6595, 30616), (7654, 26380), (10552, 19135), (13190, 15308)]