21605518

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{1223}}^1$

素因数の和:1320

約数の個数: 24

約数和(自身を含む): 36139824

約数和(自身を除く): 14534306

約数列:

[1, 2, 11, 22, 73, 121, 146, 242, 803, 1223, 1606, 2446, 8833, 13453, 17666, 26906, 89279, 147983, 178558, 295966, 982069, 1964138, 10802759, 21605518]

約数ペア:

[(1, 21605518), (2, 10802759), (11, 1964138), (22, 982069), (73, 295966), (121, 178558), (146, 147983), (242, 89279), (803, 26906), (1223, 17666), (1606, 13453), (2446, 8833)]