21783921

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{5351}}^1$

素因数の和:5436

約数の個数: 16

約数和(自身を含む): 30827520

約数和(自身を除く): 9043599

約数列:

[1, 3, 23, 59, 69, 177, 1357, 4071, 5351, 16053, 123073, 315709, 369219, 947127, 7261307, 21783921]

約数ペア:

[(1, 21783921), (3, 7261307), (23, 947127), (59, 369219), (69, 315709), (177, 123073), (1357, 16053), (4071, 5351)]