20539978

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{1553}}^1$

素因数の和:1961

約数の個数: 16

約数和(自身を含む): 32727240

約数和(自身を除く): 12187262

約数列:

[1, 2, 17, 34, 389, 778, 1553, 3106, 6613, 13226, 26401, 52802, 604117, 1208234, 10269989, 20539978]

約数ペア:

[(1, 20539978), (2, 10269989), (17, 1208234), (34, 604117), (389, 52802), (778, 26401), (1553, 13226), (3106, 6613)]