21256101

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{9049}}^1$

素因数の和:9090

約数の個数: 20

約数和(自身を含む): 32851500

約数和(自身を除く): 11595399

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 9049, 27147, 81441, 244323, 262421, 732969, 787263, 2361789, 7085367, 21256101]

約数ペア:

[(1, 21256101), (3, 7085367), (9, 2361789), (27, 787263), (29, 732969), (81, 262421), (87, 244323), (261, 81441), (783, 27147), (2349, 9049)]