20449295

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{419}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 4831345

約数列:

[1, 5, 43, 215, 227, 419, 1135, 2095, 9761, 18017, 48805, 90085, 95113, 475565, 4089859, 20449295]

約数ペア:

[(1, 20449295), (5, 4089859), (43, 475565), (215, 95113), (227, 90085), (419, 48805), (1135, 18017), (2095, 9761)]