78215420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{1051}}^1$

素因数の和:1182

約数の個数: 36

約数和(自身を含む): 167148072

約数和(自身を除く): 88932652

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1051, 1220, 2102, 3721, 4204, 5255, 7442, 10510, 14884, 18605, 21020, 37210, 64111, 74420, 128222, 256444, 320555, 641110, 1282220, 3910771, 7821542, 15643084, 19553855, 39107710, 78215420]

約数ペア:

[(1, 78215420), (2, 39107710), (4, 19553855), (5, 15643084), (10, 7821542), (20, 3910771), (61, 1282220), (122, 641110), (244, 320555), (305, 256444), (610, 128222), (1051, 74420), (1220, 64111), (2102, 37210), (3721, 21020), (4204, 18605), (5255, 14884), (7442, 10510)]