21909957

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{683}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 31918176

約数和(自身を除く): 10008219

約数列:

[1, 3, 17, 37, 51, 111, 289, 629, 683, 867, 1887, 2049, 10693, 11611, 25271, 32079, 34833, 75813, 197387, 429607, 592161, 1288821, 7303319, 21909957]

約数ペア:

[(1, 21909957), (3, 7303319), (17, 1288821), (37, 592161), (51, 429607), (111, 197387), (289, 75813), (629, 34833), (683, 32079), (867, 25271), (1887, 11611), (2049, 10693)]