20916280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6791}}^1$

素因数の和:6820

約数の個数: 64

約数和(自身を含む): 58682880

約数和(自身を除く): 37766600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6791, 13582, 27164, 33955, 47537, 54328, 67910, 74701, 95074, 135820, 149402, 190148, 237685, 271640, 298804, 373505, 380296, 475370, 522907, 597608, 747010, 950740, 1045814, 1494020, 1901480, 2091628, 2614535, 2988040, 4183256, 5229070, 10458140, 20916280]

約数ペア:

[(1, 20916280), (2, 10458140), (4, 5229070), (5, 4183256), (7, 2988040), (8, 2614535), (10, 2091628), (11, 1901480), (14, 1494020), (20, 1045814), (22, 950740), (28, 747010), (35, 597608), (40, 522907), (44, 475370), (55, 380296), (56, 373505), (70, 298804), (77, 271640), (88, 237685), (110, 190148), (140, 149402), (154, 135820), (220, 95074), (280, 74701), (308, 67910), (385, 54328), (440, 47537), (616, 33955), (770, 27164), (1540, 13582), (3080, 6791)]