21019135

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4785665

約数列:

[1, 5, 79, 127, 395, 419, 635, 2095, 10033, 33101, 50165, 53213, 165505, 266065, 4203827, 21019135]

約数ペア:

[(1, 21019135), (5, 4203827), (79, 266065), (127, 165505), (395, 53213), (419, 50165), (635, 33101), (2095, 10033)]