21388048

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121523}}^1$

素因数の和:121542

約数の個数: 20

約数和(自身を含む): 45206928

約数和(自身を除く): 23818880

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121523, 243046, 486092, 972184, 1336753, 1944368, 2673506, 5347012, 10694024, 21388048]

約数ペア:

[(1, 21388048), (2, 10694024), (4, 5347012), (8, 2673506), (11, 1944368), (16, 1336753), (22, 972184), (44, 486092), (88, 243046), (176, 121523)]