21749080

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10259}}^1$

素因数の和:10323

約数の個数: 32

約数和(自身を含む): 49863600

約数和(自身を除く): 28114520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10259, 20518, 41036, 51295, 82072, 102590, 205180, 410360, 543727, 1087454, 2174908, 2718635, 4349816, 5437270, 10874540, 21749080]

約数ペア:

[(1, 21749080), (2, 10874540), (4, 5437270), (5, 4349816), (8, 2718635), (10, 2174908), (20, 1087454), (40, 543727), (53, 410360), (106, 205180), (212, 102590), (265, 82072), (424, 51295), (530, 41036), (1060, 20518), (2120, 10259)]