20161895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{991}}^1$

素因数の和:1322

約数の個数: 16

約数和(自身を含む): 26164992

約数和(自身を除く): 6003097

約数列:

[1, 5, 13, 65, 313, 991, 1565, 4069, 4955, 12883, 20345, 64415, 310183, 1550915, 4032379, 20161895]

約数ペア:

[(1, 20161895), (5, 4032379), (13, 1550915), (65, 310183), (313, 64415), (991, 20345), (1565, 12883), (4069, 4955)]