21095997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{677}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 32804352

約数和(自身を除く): 11708355

約数列:

[1, 3, 13, 17, 39, 47, 51, 141, 221, 611, 663, 677, 799, 1833, 2031, 2397, 8801, 10387, 11509, 26403, 31161, 31819, 34527, 95457, 149617, 413647, 448851, 540923, 1240941, 1622769, 7031999, 21095997]

約数ペア:

[(1, 21095997), (3, 7031999), (13, 1622769), (17, 1240941), (39, 540923), (47, 448851), (51, 413647), (141, 149617), (221, 95457), (611, 34527), (663, 31819), (677, 31161), (799, 26403), (1833, 11509), (2031, 10387), (2397, 8801)]