20513304581

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{1931}}^1\times {\mathrm{19709}}^1$

素因数の和:21665

約数の個数: 24

約数和(自身を含む): 26046528480

約数和(自身を除く): 5533223899

約数列:

[1, 7, 11, 49, 77, 539, 1931, 13517, 19709, 21241, 94619, 137963, 148687, 216799, 965741, 1040809, 1517593, 10623151, 38058079, 266406553, 418638869, 1864845871, 2930472083, 20513304581]

約数ペア:

[(1, 20513304581), (7, 2930472083), (11, 1864845871), (49, 418638869), (77, 266406553), (539, 38058079), (1931, 10623151), (13517, 1517593), (19709, 1040809), (21241, 965741), (94619, 216799), (137963, 148687)]