21260816

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10463}}^1$

素因数の和:10598

約数の個数: 20

約数和(自身を含む): 41521152

約数和(自身を除く): 20260336

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10463, 20926, 41852, 83704, 167408, 1328801, 2657602, 5315204, 10630408, 21260816]

約数ペア:

[(1, 21260816), (2, 10630408), (4, 5315204), (8, 2657602), (16, 1328801), (127, 167408), (254, 83704), (508, 41852), (1016, 20926), (2032, 10463)]