20506203

素因数分解:

$3^4\times {\mathrm{383}}^1\times {\mathrm{661}}^1$

素因数の和:1056

約数の個数: 20

約数和(自身を含む): 30759168

約数和(自身を除く): 10252965

約数列:

[1, 3, 9, 27, 81, 383, 661, 1149, 1983, 3447, 5949, 10341, 17847, 31023, 53541, 253163, 759489, 2278467, 6835401, 20506203]

約数ペア:

[(1, 20506203), (3, 6835401), (9, 2278467), (27, 759489), (81, 253163), (383, 53541), (661, 31023), (1149, 17847), (1983, 10341), (3447, 5949)]