20909899

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:462

約数の個数: 16

約数和(自身を含む): 23018400

約数和(自身を除く): 2108501

約数列:

[1, 19, 29, 137, 277, 551, 2603, 3973, 5263, 8033, 37949, 75487, 152627, 721031, 1100521, 20909899]

約数ペア:

[(1, 20909899), (19, 1100521), (29, 721031), (137, 152627), (277, 75487), (551, 37949), (2603, 8033), (3973, 5263)]