21091016

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155081}}^1$

素因数の和:155104

約数の個数: 16

約数和(自身を含む): 41872140

約数和(自身を除く): 20781124

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155081, 310162, 620324, 1240648, 2636377, 5272754, 10545508, 21091016]

約数ペア:

[(1, 21091016), (2, 10545508), (4, 5272754), (8, 2636377), (17, 1240648), (34, 620324), (68, 310162), (136, 155081)]