21216129280

素因数分解:

$2^8\times 5^1\times {\mathrm{16575101}}^1$

素因数の和:16575122

約数の個数: 36

約数和(自身を含む): 50819262732

約数和(自身を除く): 29603133452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16575101, 33150202, 66300404, 82875505, 132600808, 165751010, 265201616, 331502020, 530403232, 663004040, 1060806464, 1326008080, 2121612928, 2652016160, 4243225856, 5304032320, 10608064640, 21216129280]

約数ペア:

[(1, 21216129280), (2, 10608064640), (4, 5304032320), (5, 4243225856), (8, 2652016160), (10, 2121612928), (16, 1326008080), (20, 1060806464), (32, 663004040), (40, 530403232), (64, 331502020), (80, 265201616), (128, 165751010), (160, 132600808), (256, 82875505), (320, 66300404), (640, 33150202), (1280, 16575101)]