20512804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{937}}^1$

素因数の和:1375

約数の個数: 24

約数和(自身を含む): 38791928

約数和(自身を除く): 18279124

約数列:

[1, 2, 4, 13, 26, 52, 421, 842, 937, 1684, 1874, 3748, 5473, 10946, 12181, 21892, 24362, 48724, 394477, 788954, 1577908, 5128201, 10256402, 20512804]

約数ペア:

[(1, 20512804), (2, 10256402), (4, 5128201), (13, 1577908), (26, 788954), (52, 394477), (421, 48724), (842, 24362), (937, 21892), (1684, 12181), (1874, 10946), (3748, 5473)]