20791287

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{397}}^1$

素因数の和:460

約数の個数: 36

約数和(自身を含む): 34334664

約数和(自身を除く): 13543377

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 207, 253, 397, 529, 759, 1191, 1587, 2277, 3573, 4367, 4761, 5819, 9131, 13101, 17457, 27393, 39303, 52371, 82179, 100441, 210013, 301323, 630039, 903969, 1890117, 2310143, 6930429, 20791287]

約数ペア:

[(1, 20791287), (3, 6930429), (9, 2310143), (11, 1890117), (23, 903969), (33, 630039), (69, 301323), (99, 210013), (207, 100441), (253, 82179), (397, 52371), (529, 39303), (759, 27393), (1191, 17457), (1587, 13101), (2277, 9131), (3573, 5819), (4367, 4761)]