19500580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:804

約数の個数: 48

約数和(自身を含む): 45069696

約数和(自身を除く): 25569116

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 220, 274, 548, 647, 685, 1294, 1370, 1507, 2588, 2740, 3014, 3235, 6028, 6470, 7117, 7535, 12940, 14234, 15070, 28468, 30140, 35585, 71170, 88639, 142340, 177278, 354556, 443195, 886390, 975029, 1772780, 1950058, 3900116, 4875145, 9750290, 19500580]

約数ペア:

[(1, 19500580), (2, 9750290), (4, 4875145), (5, 3900116), (10, 1950058), (11, 1772780), (20, 975029), (22, 886390), (44, 443195), (55, 354556), (110, 177278), (137, 142340), (220, 88639), (274, 71170), (548, 35585), (647, 30140), (685, 28468), (1294, 15070), (1370, 14234), (1507, 12940), (2588, 7535), (2740, 7117), (3014, 6470), (3235, 6028)]