21204291215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{631}}^1\times {\mathrm{2837}}^1$

素因数の和:3599

約数の個数: 32

約数和(自身を含む): 26861193216

約数和(自身を除く): 5656902001

約数列:

[1, 5, 23, 103, 115, 515, 631, 2369, 2837, 3155, 11845, 14185, 14513, 64993, 65251, 72565, 292211, 324965, 326255, 1461055, 1494839, 1790147, 6720853, 7474195, 8950735, 33604265, 41173381, 184385141, 205866905, 921925705, 4240858243, 21204291215]

約数ペア:

[(1, 21204291215), (5, 4240858243), (23, 921925705), (103, 205866905), (115, 184385141), (515, 41173381), (631, 33604265), (2369, 8950735), (2837, 7474195), (3155, 6720853), (11845, 1790147), (14185, 1494839), (14513, 1461055), (64993, 326255), (65251, 324965), (72565, 292211)]