20993008

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{4139}}^1$

素因数の和:4464

約数の個数: 20

約数和(自身を含む): 40812120

約数和(自身を除く): 19819112

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 4139, 5072, 8278, 16556, 33112, 66224, 1312063, 2624126, 5248252, 10496504, 20993008]

約数ペア:

[(1, 20993008), (2, 10496504), (4, 5248252), (8, 2624126), (16, 1312063), (317, 66224), (634, 33112), (1268, 16556), (2536, 8278), (4139, 5072)]