20851864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1123}}^1$

素因数の和:1351

約数の個数: 32

約数和(自身を含む): 42891840

約数和(自身を除く): 22039976

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 211, 422, 844, 1123, 1688, 2246, 2321, 4492, 4642, 8984, 9284, 12353, 18568, 24706, 49412, 98824, 236953, 473906, 947812, 1895624, 2606483, 5212966, 10425932, 20851864]

約数ペア:

[(1, 20851864), (2, 10425932), (4, 5212966), (8, 2606483), (11, 1895624), (22, 947812), (44, 473906), (88, 236953), (211, 98824), (422, 49412), (844, 24706), (1123, 18568), (1688, 12353), (2246, 9284), (2321, 8984), (4492, 4642)]