21216493

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 23445504

約数和(自身を除く): 2229011

約数列:

[1, 17, 31, 127, 317, 527, 2159, 3937, 5389, 9827, 40259, 66929, 167059, 684403, 1248029, 21216493]

約数ペア:

[(1, 21216493), (17, 1248029), (31, 684403), (127, 167059), (317, 66929), (527, 40259), (2159, 9827), (3937, 5389)]