420031251

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{19717}}^1$

素因数の和:19992

約数の個数: 20

約数和(自身を含む): 629871792

約数和(自身を除く): 209840541

約数列:

[1, 3, 9, 27, 81, 263, 789, 2367, 7101, 19717, 21303, 59151, 177453, 532359, 1597077, 5185571, 15556713, 46670139, 140010417, 420031251]

約数ペア:

[(1, 420031251), (3, 140010417), (9, 46670139), (27, 15556713), (81, 5185571), (263, 1597077), (789, 532359), (2367, 177453), (7101, 59151), (19717, 21303)]