21058160

素因数分解:

$2^4\times 5^1\times {\mathrm{263227}}^1$

素因数の和:263240

約数の個数: 20

約数和(自身を含む): 48960408

約数和(自身を除く): 27902248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263227, 526454, 1052908, 1316135, 2105816, 2632270, 4211632, 5264540, 10529080, 21058160]

約数ペア:

[(1, 21058160), (2, 10529080), (4, 5264540), (5, 4211632), (8, 2632270), (10, 2105816), (16, 1316135), (20, 1052908), (40, 526454), (80, 263227)]