21278230

素因数分解:

$2^1\times 5^1\times {\mathrm{769}}^1\times {\mathrm{2767}}^1$

素因数の和:3543

約数の個数: 16

約数和(自身を含む): 38364480

約数和(自身を除く): 17086250

約数列:

[1, 2, 5, 10, 769, 1538, 2767, 3845, 5534, 7690, 13835, 27670, 2127823, 4255646, 10639115, 21278230]

約数ペア:

[(1, 21278230), (2, 10639115), (5, 4255646), (10, 2127823), (769, 27670), (1538, 13835), (2767, 7690), (3845, 5534)]