21972721

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1153}}^1$

素因数の和:1248

約数の個数: 16

約数和(自身を含む): 24926400

約数和(自身を除く): 2953679

約数列:

[1, 17, 19, 59, 323, 1003, 1121, 1153, 19057, 19601, 21907, 68027, 372419, 1156459, 1292513, 21972721]

約数ペア:

[(1, 21972721), (17, 1292513), (19, 1156459), (59, 372419), (323, 68027), (1003, 21907), (1121, 19601), (1153, 19057)]