78406820

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{4729}}^1$

素因数の和:5567

約数の個数: 24

約数和(自身を含む): 164887800

約数和(自身を除く): 86480980

約数列:

[1, 2, 4, 5, 10, 20, 829, 1658, 3316, 4145, 4729, 8290, 9458, 16580, 18916, 23645, 47290, 94580, 3920341, 7840682, 15681364, 19601705, 39203410, 78406820]

約数ペア:

[(1, 78406820), (2, 39203410), (4, 19601705), (5, 15681364), (10, 7840682), (20, 3920341), (829, 94580), (1658, 47290), (3316, 23645), (4145, 18916), (4729, 16580), (8290, 9458)]