20996921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2389}}^1$

素因数の和:2464

約数の個数: 16

約数和(自身を含む): 24779520

約数和(自身を除く): 3782599

約数列:

[1, 11, 17, 47, 187, 517, 799, 2389, 8789, 26279, 40613, 112283, 446743, 1235113, 1908811, 20996921]

約数ペア:

[(1, 20996921), (11, 1908811), (17, 1235113), (47, 446743), (187, 112283), (517, 40613), (799, 26279), (2389, 8789)]