21765303

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1997}}^1$

素因数の和:2183

約数の個数: 24

約数和(自身を含む): 36155808

約数和(自身を除く): 14390505

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 1997, 3633, 5991, 10899, 13979, 17973, 41937, 125811, 345481, 1036443, 2418367, 3109329, 7255101, 21765303]

約数ペア:

[(1, 21765303), (3, 7255101), (7, 3109329), (9, 2418367), (21, 1036443), (63, 345481), (173, 125811), (519, 41937), (1211, 17973), (1557, 13979), (1997, 10899), (3633, 5991)]