19940905

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1013}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 24920064

約数和(自身を除く): 4979159

約数列:

[1, 5, 31, 127, 155, 635, 1013, 3937, 5065, 19685, 31403, 128651, 157015, 643255, 3988181, 19940905]

約数ペア:

[(1, 19940905), (5, 3988181), (31, 643255), (127, 157015), (155, 128651), (635, 31403), (1013, 19685), (3937, 5065)]