20508309

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5387}}^1$

素因数の和:5446

約数の個数: 20

約数和(自身を含む): 31293504

約数和(自身を除く): 10785195

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5387, 16161, 48483, 145449, 253189, 436347, 759567, 2278701, 6836103, 20508309]

約数ペア:

[(1, 20508309), (3, 6836103), (9, 2278701), (27, 759567), (47, 436347), (81, 253189), (141, 145449), (423, 48483), (1269, 16161), (3807, 5387)]