21954565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{1493}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 28075248

約数和(自身を除く): 6120683

約数列:

[1, 5, 17, 85, 173, 865, 1493, 2941, 7465, 14705, 25381, 126905, 258289, 1291445, 4390913, 21954565]

約数ペア:

[(1, 21954565), (5, 4390913), (17, 1291445), (85, 258289), (173, 126905), (865, 25381), (1493, 14705), (2941, 7465)]