21256398

素因数分解:

$2^1\times 3^3\times {\mathrm{393637}}^1$

素因数の和:393648

約数の個数: 16

約数和(自身を含む): 47236560

約数和(自身を除く): 25980162

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393637, 787274, 1180911, 2361822, 3542733, 7085466, 10628199, 21256398]

約数ペア:

[(1, 21256398), (2, 10628199), (3, 7085466), (6, 3542733), (9, 2361822), (18, 1180911), (27, 787274), (54, 393637)]