20375180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1263

約数の個数: 72

約数和(自身を含む): 52744608

約数和(自身を除く): 32369428

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1223, 1666, 2380, 2446, 3332, 4165, 4892, 6115, 8330, 8561, 12230, 16660, 17122, 20791, 24460, 34244, 41582, 42805, 59927, 83164, 85610, 103955, 119854, 145537, 171220, 207910, 239708, 291074, 299635, 415820, 582148, 599270, 727685, 1018759, 1198540, 1455370, 2037518, 2910740, 4075036, 5093795, 10187590, 20375180]

約数ペア:

[(1, 20375180), (2, 10187590), (4, 5093795), (5, 4075036), (7, 2910740), (10, 2037518), (14, 1455370), (17, 1198540), (20, 1018759), (28, 727685), (34, 599270), (35, 582148), (49, 415820), (68, 299635), (70, 291074), (85, 239708), (98, 207910), (119, 171220), (140, 145537), (170, 119854), (196, 103955), (238, 85610), (245, 83164), (340, 59927), (476, 42805), (490, 41582), (595, 34244), (833, 24460), (980, 20791), (1190, 17122), (1223, 16660), (1666, 12230), (2380, 8561), (2446, 8330), (3332, 6115), (4165, 4892)]