19969497

素因数分解:

$3^7\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 31330560

約数和(自身を除く): 11361063

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 243, 397, 621, 729, 1191, 1863, 2187, 3573, 5589, 9131, 10719, 16767, 27393, 32157, 50301, 82179, 96471, 246537, 289413, 739611, 868239, 2218833, 6656499, 19969497]

約数ペア:

[(1, 19969497), (3, 6656499), (9, 2218833), (23, 868239), (27, 739611), (69, 289413), (81, 246537), (207, 96471), (243, 82179), (397, 50301), (621, 32157), (729, 27393), (1191, 16767), (1863, 10719), (2187, 9131), (3573, 5589)]