161757080

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{619}}^1$

素因数の和:816

約数の個数: 64

約数和(自身を含む): 374976000

約数和(自身を除く): 213218920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 139, 188, 235, 278, 376, 470, 556, 619, 695, 940, 1112, 1238, 1390, 1880, 2476, 2780, 3095, 4952, 5560, 6190, 6533, 12380, 13066, 24760, 26132, 29093, 32665, 52264, 58186, 65330, 86041, 116372, 130660, 145465, 172082, 232744, 261320, 290930, 344164, 430205, 581860, 688328, 860410, 1163720, 1720820, 3441640, 4043927, 8087854, 16175708, 20219635, 32351416, 40439270, 80878540, 161757080]

約数ペア:

[(1, 161757080), (2, 80878540), (4, 40439270), (5, 32351416), (8, 20219635), (10, 16175708), (20, 8087854), (40, 4043927), (47, 3441640), (94, 1720820), (139, 1163720), (188, 860410), (235, 688328), (278, 581860), (376, 430205), (470, 344164), (556, 290930), (619, 261320), (695, 232744), (940, 172082), (1112, 145465), (1238, 130660), (1390, 116372), (1880, 86041), (2476, 65330), (2780, 58186), (3095, 52264), (4952, 32665), (5560, 29093), (6190, 26132), (6533, 24760), (12380, 13066)]