20156989111

素因数分解:

$7^1\times {\mathrm{503}}^1\times {\mathrm{1277}}^1\times {\mathrm{4483}}^1$

素因数の和:6270

約数の個数: 16

約数和(自身を含む): 23105585664

約数和(自身を除く): 2948596553

約数列:

[1, 7, 503, 1277, 3521, 4483, 8939, 31381, 642331, 2254949, 4496317, 5724791, 15784643, 40073537, 2879569873, 20156989111]

約数ペア:

[(1, 20156989111), (7, 2879569873), (503, 40073537), (1277, 15784643), (3521, 5724791), (4483, 4496317), (8939, 2254949), (31381, 642331)]