20791855

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19163}}^1$

素因数の和:19206

約数の個数: 16

約数和(自身を含む): 29435904

約数和(自身を除く): 8644049

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 19163, 95815, 134141, 594053, 670705, 2970265, 4158371, 20791855]

約数ペア:

[(1, 20791855), (5, 4158371), (7, 2970265), (31, 670705), (35, 594053), (155, 134141), (217, 95815), (1085, 19163)]