20579560

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 48632400

約数和(自身を除く): 28052840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 113, 116, 145, 157, 226, 232, 290, 314, 452, 565, 580, 628, 785, 904, 1130, 1160, 1256, 1570, 2260, 3140, 3277, 4520, 4553, 6280, 6554, 9106, 13108, 16385, 17741, 18212, 22765, 26216, 32770, 35482, 36424, 45530, 65540, 70964, 88705, 91060, 131080, 141928, 177410, 182120, 354820, 514489, 709640, 1028978, 2057956, 2572445, 4115912, 5144890, 10289780, 20579560]

約数ペア:

[(1, 20579560), (2, 10289780), (4, 5144890), (5, 4115912), (8, 2572445), (10, 2057956), (20, 1028978), (29, 709640), (40, 514489), (58, 354820), (113, 182120), (116, 177410), (145, 141928), (157, 131080), (226, 91060), (232, 88705), (290, 70964), (314, 65540), (452, 45530), (565, 36424), (580, 35482), (628, 32770), (785, 26216), (904, 22765), (1130, 18212), (1160, 17741), (1256, 16385), (1570, 13108), (2260, 9106), (3140, 6554), (3277, 6280), (4520, 4553)]