21595491

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15683}}^1$

素因数の和:15712

約数の個数: 20

約数和(自身を含む): 34159752

約数和(自身を除く): 12564261

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15683, 47049, 141147, 266611, 423441, 799833, 1270323, 2399499, 7198497, 21595491]

約数ペア:

[(1, 21595491), (3, 7198497), (9, 2399499), (17, 1270323), (27, 799833), (51, 423441), (81, 266611), (153, 141147), (459, 47049), (1377, 15683)]