21975303

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25523}}^1$

素因数の和:25574

約数の個数: 16

約数和(自身を含む): 34304256

約数和(自身を除く): 12328953

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25523, 76569, 178661, 535983, 1046443, 3139329, 7325101, 21975303]

約数ペア:

[(1, 21975303), (3, 7325101), (7, 3139329), (21, 1046443), (41, 535983), (123, 178661), (287, 76569), (861, 25523)]