21138928

素因数分解:

$2^4\times {\mathrm{149}}^1\times {\mathrm{8867}}^1$

素因数の和:9024

約数の個数: 20

約数和(自身を含む): 41236200

約数和(自身を除く): 20097272

約数列:

[1, 2, 4, 8, 16, 149, 298, 596, 1192, 2384, 8867, 17734, 35468, 70936, 141872, 1321183, 2642366, 5284732, 10569464, 21138928]

約数ペア:

[(1, 21138928), (2, 10569464), (4, 5284732), (8, 2642366), (16, 1321183), (149, 141872), (298, 70936), (596, 35468), (1192, 17734), (2384, 8867)]