21249933

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{347}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 28814400

約数和(自身を除く): 7564467

約数列:

[1, 3, 137, 149, 347, 411, 447, 1041, 20413, 47539, 51703, 61239, 142617, 155109, 7083311, 21249933]

約数ペア:

[(1, 21249933), (3, 7083311), (137, 155109), (149, 142617), (347, 61239), (411, 51703), (447, 47539), (1041, 20413)]