20989718

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1\times {\mathrm{1021}}^1$

素因数の和:1583

約数の個数: 16

約数和(自身を含む): 33235440

約数和(自身を除く): 12245722

約数列:

[1, 2, 19, 38, 541, 1021, 1082, 2042, 10279, 19399, 20558, 38798, 552361, 1104722, 10494859, 20989718]

約数ペア:

[(1, 20989718), (2, 10494859), (19, 1104722), (38, 552361), (541, 38798), (1021, 20558), (1082, 19399), (2042, 10279)]