20076980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13037}}^1$

素因数の和:13064

約数の個数: 48

約数和(自身を含む): 52569216

約数和(自身を除く): 32492236

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13037, 26074, 52148, 65185, 91259, 130370, 143407, 182518, 260740, 286814, 365036, 456295, 573628, 717035, 912590, 1003849, 1434070, 1825180, 2007698, 2868140, 4015396, 5019245, 10038490, 20076980]

約数ペア:

[(1, 20076980), (2, 10038490), (4, 5019245), (5, 4015396), (7, 2868140), (10, 2007698), (11, 1825180), (14, 1434070), (20, 1003849), (22, 912590), (28, 717035), (35, 573628), (44, 456295), (55, 365036), (70, 286814), (77, 260740), (110, 182518), (140, 143407), (154, 130370), (220, 91259), (308, 65185), (385, 52148), (770, 26074), (1540, 13037)]