18638704

素因数分解:

$2^4\times 7^1\times {\mathrm{166417}}^1$

素因数の和:166432

約数の個数: 20

約数和(自身を含む): 41271664

約数和(自身を除く): 22632960

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 166417, 332834, 665668, 1164919, 1331336, 2329838, 2662672, 4659676, 9319352, 18638704]

約数ペア:

[(1, 18638704), (2, 9319352), (4, 4659676), (7, 2662672), (8, 2329838), (14, 1331336), (16, 1164919), (28, 665668), (56, 332834), (112, 166417)]