19979937

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 29652480

約数和(自身を除く): 9672543

約数列:

[1, 3, 9, 59, 177, 191, 197, 531, 573, 591, 1719, 1773, 11269, 11623, 33807, 34869, 37627, 101421, 104607, 112881, 338643, 2219993, 6659979, 19979937]

約数ペア:

[(1, 19979937), (3, 6659979), (9, 2219993), (59, 338643), (177, 112881), (191, 104607), (197, 101421), (531, 37627), (573, 34869), (591, 33807), (1719, 11623), (1773, 11269)]