19513360

素因数分解:

$2^4\times 5^1\times {\mathrm{243917}}^1$

素因数の和:243930

約数の個数: 20

約数和(自身を含む): 45368748

約数和(自身を除く): 25855388

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243917, 487834, 975668, 1219585, 1951336, 2439170, 3902672, 4878340, 9756680, 19513360]

約数ペア:

[(1, 19513360), (2, 9756680), (4, 4878340), (5, 3902672), (8, 2439170), (10, 1951336), (16, 1219585), (20, 975668), (40, 487834), (80, 243917)]