21591143

素因数分解:

$7^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:446

約数の個数: 16

約数和(自身を含む): 25190400

約数和(自身を除く): 3599257

約数列:

[1, 7, 127, 149, 163, 889, 1043, 1141, 18923, 20701, 24287, 132461, 144907, 170009, 3084449, 21591143]

約数ペア:

[(1, 21591143), (7, 3084449), (127, 170009), (149, 144907), (163, 132461), (889, 24287), (1043, 20701), (1141, 18923)]