51817580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{677}}^1$

素因数の和:818

約数の個数: 48

約数和(自身を含む): 112764960

約数和(自身を除く): 60947380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 677, 860, 890, 1354, 1780, 2708, 3385, 3827, 6770, 7654, 13540, 15308, 19135, 29111, 38270, 58222, 60253, 76540, 116444, 120506, 145555, 241012, 291110, 301265, 582220, 602530, 1205060, 2590879, 5181758, 10363516, 12954395, 25908790, 51817580]

約数ペア:

[(1, 51817580), (2, 25908790), (4, 12954395), (5, 10363516), (10, 5181758), (20, 2590879), (43, 1205060), (86, 602530), (89, 582220), (172, 301265), (178, 291110), (215, 241012), (356, 145555), (430, 120506), (445, 116444), (677, 76540), (860, 60253), (890, 58222), (1354, 38270), (1780, 29111), (2708, 19135), (3385, 15308), (3827, 13540), (6770, 7654)]