20801812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{601}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 38684520

約数和(自身を除く): 17882708

約数列:

[1, 2, 4, 17, 34, 68, 509, 601, 1018, 1202, 2036, 2404, 8653, 10217, 17306, 20434, 34612, 40868, 305909, 611818, 1223636, 5200453, 10400906, 20801812]

約数ペア:

[(1, 20801812), (2, 10400906), (4, 5200453), (17, 1223636), (34, 611818), (68, 305909), (509, 40868), (601, 34612), (1018, 20434), (1202, 17306), (2036, 10217), (2404, 8653)]