21387984

素因数分解:

$2^4\times 3^1\times {\mathrm{445583}}^1$

素因数の和:445594

約数の個数: 20

約数和(自身を含む): 55252416

約数和(自身を除く): 33864432

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 445583, 891166, 1336749, 1782332, 2673498, 3564664, 5346996, 7129328, 10693992, 21387984]

約数ペア:

[(1, 21387984), (2, 10693992), (3, 7129328), (4, 5346996), (6, 3564664), (8, 2673498), (12, 1782332), (16, 1336749), (24, 891166), (48, 445583)]