19802839

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2617}}^1$

素因数の和:2694

約数の個数: 16

約数和(自身を含む): 24127488

約数和(自身を除く): 4324649

約数列:

[1, 7, 23, 47, 161, 329, 1081, 2617, 7567, 18319, 60191, 122999, 421337, 860993, 2828977, 19802839]

約数ペア:

[(1, 19802839), (7, 2828977), (23, 860993), (47, 421337), (161, 122999), (329, 60191), (1081, 18319), (2617, 7567)]