78990821

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{28001}}^1$

素因数の和:28052

約数の個数: 16

約数和(自身を含む): 100359168

約数和(自身を除く): 21368347

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 28001, 196007, 364013, 868031, 2548091, 6076217, 11284403, 78990821]

約数ペア:

[(1, 78990821), (7, 11284403), (13, 6076217), (31, 2548091), (91, 868031), (217, 364013), (403, 196007), (2821, 28001)]