20722975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9109}}^1$

素因数の和:9139

約数の個数: 24

約数和(自身を含む): 31629920

約数和(自身を除く): 10906945

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9109, 45545, 63763, 118417, 227725, 318815, 592085, 828919, 1594075, 2960425, 4144595, 20722975]

約数ペア:

[(1, 20722975), (5, 4144595), (7, 2960425), (13, 1594075), (25, 828919), (35, 592085), (65, 318815), (91, 227725), (175, 118417), (325, 63763), (455, 45545), (2275, 9109)]