21648505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{1259}}^1$

素因数の和:1464

約数の個数: 16

約数和(自身を含む): 27518400

約数和(自身を除く): 5869895

約数列:

[1, 5, 19, 95, 181, 905, 1259, 3439, 6295, 17195, 23921, 119605, 227879, 1139395, 4329701, 21648505]

約数ペア:

[(1, 21648505), (5, 4329701), (19, 1139395), (95, 227879), (181, 119605), (905, 23921), (1259, 17195), (3439, 6295)]