21456968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{1069}}^1$

素因数の和:1281

約数の個数: 32

約数和(自身を含む): 43591800

約数和(自身を除く): 22134832

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 193, 386, 772, 1069, 1544, 2138, 2509, 4276, 5018, 8552, 10036, 13897, 20072, 27794, 55588, 111176, 206317, 412634, 825268, 1650536, 2682121, 5364242, 10728484, 21456968]

約数ペア:

[(1, 21456968), (2, 10728484), (4, 5364242), (8, 2682121), (13, 1650536), (26, 825268), (52, 412634), (104, 206317), (193, 111176), (386, 55588), (772, 27794), (1069, 20072), (1544, 13897), (2138, 10036), (2509, 8552), (4276, 5018)]