20647952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1873}}^1$

素因数の和:1947

約数の個数: 40

約数和(自身を含む): 43919064

約数和(自身を除く): 23271112

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 1873, 2756, 3746, 5512, 7492, 11024, 14984, 24349, 29968, 48698, 97396, 99269, 194792, 198538, 389584, 397076, 794152, 1290497, 1588304, 2580994, 5161988, 10323976, 20647952]

約数ペア:

[(1, 20647952), (2, 10323976), (4, 5161988), (8, 2580994), (13, 1588304), (16, 1290497), (26, 794152), (52, 397076), (53, 389584), (104, 198538), (106, 194792), (208, 99269), (212, 97396), (424, 48698), (689, 29968), (848, 24349), (1378, 14984), (1873, 11024), (2756, 7492), (3746, 5512)]