21307952

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18757}}^1$

素因数の和:18836

約数の個数: 20

約数和(自身を含む): 41867856

約数和(自身を除く): 20559904

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18757, 37514, 75028, 150056, 300112, 1331747, 2663494, 5326988, 10653976, 21307952]

約数ペア:

[(1, 21307952), (2, 10653976), (4, 5326988), (8, 2663494), (16, 1331747), (71, 300112), (142, 150056), (284, 75028), (568, 37514), (1136, 18757)]