2143291205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{385831}}^1$

素因数の和:385948

約数の個数: 16

約数和(自身を含む): 2833550208

約数和(自身を除く): 690259003

約数列:

[1, 5, 11, 55, 101, 505, 1111, 5555, 385831, 1929155, 4244141, 21220705, 38968931, 194844655, 428658241, 2143291205]

約数ペア:

[(1, 2143291205), (5, 428658241), (11, 194844655), (55, 38968931), (101, 21220705), (505, 4244141), (1111, 1929155), (5555, 385831)]