21249918

素因数分解:

$2^1\times 3^3\times {\mathrm{393517}}^1$

素因数の和:393528

約数の個数: 16

約数和(自身を含む): 47222160

約数和(自身を除く): 25972242

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393517, 787034, 1180551, 2361102, 3541653, 7083306, 10624959, 21249918]

約数ペア:

[(1, 21249918), (2, 10624959), (3, 7083306), (6, 3541653), (9, 2361102), (18, 1180551), (27, 787034), (54, 393517)]