21404615

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{601}}^1$

素因数の和:1042

約数の個数: 16

約数和(自身を含む): 27306720

約数和(自身を除く): 5902105

約数列:

[1, 5, 17, 85, 419, 601, 2095, 3005, 7123, 10217, 35615, 51085, 251819, 1259095, 4280923, 21404615]

約数ペア:

[(1, 21404615), (5, 4280923), (17, 1259095), (85, 251819), (419, 51085), (601, 35615), (2095, 10217), (3005, 7123)]