20551881

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{5657}}^1$

素因数の和:5840

約数の個数: 16

約数和(自身を含む): 31503744

約数和(自身を除く): 10951863

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 5657, 16971, 39599, 118797, 978661, 2935983, 6850627, 20551881]

約数ペア:

[(1, 20551881), (3, 6850627), (7, 2935983), (21, 978661), (173, 118797), (519, 39599), (1211, 16971), (3633, 5657)]