205581320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{3727}}^1$

素因数の和:3942

約数の個数: 64

約数和(自身を含む): 531463680

約数和(自身を除く): 325882360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 788, 985, 1379, 1576, 1970, 2758, 3727, 3940, 5516, 6895, 7454, 7880, 11032, 13790, 14908, 18635, 26089, 27580, 29816, 37270, 52178, 55160, 74540, 104356, 130445, 149080, 208712, 260890, 521780, 734219, 1043560, 1468438, 2936876, 3671095, 5139533, 5873752, 7342190, 10279066, 14684380, 20558132, 25697665, 29368760, 41116264, 51395330, 102790660, 205581320]

約数ペア:

[(1, 205581320), (2, 102790660), (4, 51395330), (5, 41116264), (7, 29368760), (8, 25697665), (10, 20558132), (14, 14684380), (20, 10279066), (28, 7342190), (35, 5873752), (40, 5139533), (56, 3671095), (70, 2936876), (140, 1468438), (197, 1043560), (280, 734219), (394, 521780), (788, 260890), (985, 208712), (1379, 149080), (1576, 130445), (1970, 104356), (2758, 74540), (3727, 55160), (3940, 52178), (5516, 37270), (6895, 29816), (7454, 27580), (7880, 26089), (11032, 18635), (13790, 14908)]