19840975

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{937}}^1$

素因数の和:976

約数の個数: 36

約数和(自身を含む): 30938992

約数和(自身を除く): 11098017

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 121, 175, 275, 385, 605, 847, 937, 1925, 3025, 4235, 4685, 6559, 10307, 21175, 23425, 32795, 51535, 72149, 113377, 163975, 257675, 360745, 566885, 793639, 1803725, 2834425, 3968195, 19840975]

約数ペア:

[(1, 19840975), (5, 3968195), (7, 2834425), (11, 1803725), (25, 793639), (35, 566885), (55, 360745), (77, 257675), (121, 163975), (175, 113377), (275, 72149), (385, 51535), (605, 32795), (847, 23425), (937, 21175), (1925, 10307), (3025, 6559), (4235, 4685)]