19726940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{51913}}^1$

素因数の和:51941

約数の個数: 24

約数和(自身を含む): 43607760

約数和(自身を除く): 23880820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 51913, 103826, 207652, 259565, 519130, 986347, 1038260, 1972694, 3945388, 4931735, 9863470, 19726940]

約数ペア:

[(1, 19726940), (2, 9863470), (4, 4931735), (5, 3945388), (10, 1972694), (19, 1038260), (20, 986347), (38, 519130), (76, 259565), (95, 207652), (190, 103826), (380, 51913)]