19040945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 30284928

約数和(自身を除く): 11243983

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 137, 209, 361, 385, 665, 685, 959, 1045, 1463, 1507, 1805, 2527, 2603, 3971, 4795, 7315, 7535, 10549, 12635, 13015, 18221, 19855, 27797, 28633, 49457, 52745, 91105, 138985, 143165, 200431, 247285, 346199, 544027, 1002155, 1730995, 2720135, 3808189, 19040945]

約数ペア:

[(1, 19040945), (5, 3808189), (7, 2720135), (11, 1730995), (19, 1002155), (35, 544027), (55, 346199), (77, 247285), (95, 200431), (133, 143165), (137, 138985), (209, 91105), (361, 52745), (385, 49457), (665, 28633), (685, 27797), (959, 19855), (1045, 18221), (1463, 13015), (1507, 12635), (1805, 10549), (2527, 7535), (2603, 7315), (3971, 4795)]