19017980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6841}}^1$

素因数の和:6989

約数の個数: 24

約数和(自身を含む): 40230960

約数和(自身を除く): 21212980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6841, 13682, 27364, 34205, 68410, 136820, 950899, 1901798, 3803596, 4754495, 9508990, 19017980]

約数ペア:

[(1, 19017980), (2, 9508990), (4, 4754495), (5, 3803596), (10, 1901798), (20, 950899), (139, 136820), (278, 68410), (556, 34205), (695, 27364), (1390, 13682), (2780, 6841)]