21294217

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1409}}^1$

素因数の和:1560

約数の個数: 16

約数和(自身を含む): 25989120

約数和(自身を除く): 4694903

約数列:

[1, 7, 17, 119, 127, 889, 1409, 2159, 9863, 15113, 23953, 167671, 178943, 1252601, 3042031, 21294217]

約数ペア:

[(1, 21294217), (7, 3042031), (17, 1252601), (119, 178943), (127, 167671), (889, 23953), (1409, 15113), (2159, 9863)]