21455864

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{141157}}^1$

素因数の和:141182

約数の個数: 16

約数和(自身を含む): 42347400

約数和(自身を除く): 20891536

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 141157, 282314, 564628, 1129256, 2681983, 5363966, 10727932, 21455864]

約数ペア:

[(1, 21455864), (2, 10727932), (4, 5363966), (8, 2681983), (19, 1129256), (38, 564628), (76, 282314), (152, 141157)]