20497828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8387}}^1$

素因数の和:8451

約数の個数: 24

約数和(自身を含む): 39457152

約数和(自身を除く): 18959324

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8387, 16774, 33548, 109031, 218062, 394189, 436124, 788378, 1576756, 5124457, 10248914, 20497828]

約数ペア:

[(1, 20497828), (2, 10248914), (4, 5124457), (13, 1576756), (26, 788378), (47, 436124), (52, 394189), (94, 218062), (188, 109031), (611, 33548), (1222, 16774), (2444, 8387)]