20984476

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2109

約数の個数: 24

約数和(自身を含む): 38265696

約数和(自身を除く): 17281220

約数列:

[1, 2, 4, 37, 71, 74, 142, 148, 284, 1997, 2627, 3994, 5254, 7988, 10508, 73889, 141787, 147778, 283574, 295556, 567148, 5246119, 10492238, 20984476]

約数ペア:

[(1, 20984476), (2, 10492238), (4, 5246119), (37, 567148), (71, 295556), (74, 283574), (142, 147778), (148, 141787), (284, 73889), (1997, 10508), (2627, 7988), (3994, 5254)]