21032090

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15131}}^1$

素因数の和:15277

約数の個数: 16

約数和(自身を含む): 38132640

約数和(自身を除く): 17100550

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 15131, 30262, 75655, 151310, 2103209, 4206418, 10516045, 21032090]

約数ペア:

[(1, 21032090), (2, 10516045), (5, 4206418), (10, 2103209), (139, 151310), (278, 75655), (695, 30262), (1390, 15131)]