20421709

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{15601}}^1$

素因数の和:15636

約数の個数: 16

約数和(自身を含む): 26960256

約数和(自身を除く): 6538547

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 15601, 109207, 171611, 265217, 1201277, 1856519, 2917387, 20421709]

約数ペア:

[(1, 20421709), (7, 2917387), (11, 1856519), (17, 1201277), (77, 265217), (119, 171611), (187, 109207), (1309, 15601)]