21201551

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2383}}^1$

素因数の和:2462

約数の個数: 16

約数和(自身を含む): 25632768

約数和(自身を除く): 4431217

約数列:

[1, 7, 31, 41, 217, 287, 1271, 2383, 8897, 16681, 73873, 97703, 517111, 683921, 3028793, 21201551]

約数ペア:

[(1, 21201551), (7, 3028793), (31, 683921), (41, 517111), (217, 97703), (287, 73873), (1271, 16681), (2383, 8897)]