21573153

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20143}}^1$

素因数の和:20173

約数の個数: 24

約数和(自身を含む): 37709568

約数和(自身を除く): 16136415

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20143, 60429, 141001, 181287, 342431, 423003, 1027293, 1269009, 2397017, 3081879, 7191051, 21573153]

約数ペア:

[(1, 21573153), (3, 7191051), (7, 3081879), (9, 2397017), (17, 1269009), (21, 1027293), (51, 423003), (63, 342431), (119, 181287), (153, 141001), (357, 60429), (1071, 20143)]