21870254

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{82219}}^1$

素因数の和:82247

約数の個数: 16

約数和(自身を含む): 39465600

約数和(自身を除く): 17595346

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 82219, 164438, 575533, 1151066, 1562161, 3124322, 10935127, 21870254]

約数ペア:

[(1, 21870254), (2, 10935127), (7, 3124322), (14, 1562161), (19, 1151066), (38, 575533), (133, 164438), (266, 82219)]