21690635

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 26697600

約数和(自身を除く): 5006965

約数列:

[1, 5, 79, 89, 395, 445, 617, 3085, 7031, 35155, 48743, 54913, 243715, 274565, 4338127, 21690635]

約数ペア:

[(1, 21690635), (5, 4338127), (79, 274565), (89, 243715), (395, 54913), (445, 48743), (617, 35155), (3085, 7031)]