4891990

素因数分解:

$2^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1949}}^1$

素因数の和:2207

約数の個数: 16

約数和(自身を含む): 8845200

約数和(自身を除く): 3953210

約数列:

[1, 2, 5, 10, 251, 502, 1255, 1949, 2510, 3898, 9745, 19490, 489199, 978398, 2445995, 4891990]

約数ペア:

[(1, 4891990), (2, 2445995), (5, 978398), (10, 489199), (251, 19490), (502, 9745), (1255, 3898), (1949, 2510)]