78724420

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{6359}}^1$

素因数の和:6987

約数の個数: 24

約数和(自身を含む): 165614400

約数和(自身を除く): 86889980

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 2476, 3095, 6190, 6359, 12380, 12718, 25436, 31795, 63590, 127180, 3936221, 7872442, 15744884, 19681105, 39362210, 78724420]

約数ペア:

[(1, 78724420), (2, 39362210), (4, 19681105), (5, 15744884), (10, 7872442), (20, 3936221), (619, 127180), (1238, 63590), (2476, 31795), (3095, 25436), (6190, 12718), (6359, 12380)]