21401997

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13537}}^1$

素因数の和:13588

約数の個数: 16

約数和(自身を含む): 31191552

約数和(自身を除く): 9789555

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13537, 40611, 230129, 419647, 690387, 1258941, 7133999, 21401997]

約数ペア:

[(1, 21401997), (3, 7133999), (17, 1258941), (31, 690387), (51, 419647), (93, 230129), (527, 40611), (1581, 13537)]