31880020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{16433}}^1$

素因数の和:16539

約数の個数: 24

約数和(自身を含む): 67642344

約数和(自身を除く): 35762324

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 16433, 32866, 65732, 82165, 164330, 328660, 1594001, 3188002, 6376004, 7970005, 15940010, 31880020]

約数ペア:

[(1, 31880020), (2, 15940010), (4, 7970005), (5, 6376004), (10, 3188002), (20, 1594001), (97, 328660), (194, 164330), (388, 82165), (485, 65732), (970, 32866), (1940, 16433)]