21553413

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25033}}^1$

素因数の和:25084

約数の個数: 16

約数和(自身を含む): 33645696

約数和(自身を除く): 12092283

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25033, 75099, 175231, 525693, 1026353, 3079059, 7184471, 21553413]

約数ペア:

[(1, 21553413), (3, 7184471), (7, 3079059), (21, 1026353), (41, 525693), (123, 175231), (287, 75099), (861, 25033)]