19739775

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 36211968

約数和(自身を除く): 16472193

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 71, 75, 165, 213, 275, 337, 355, 781, 825, 1011, 1065, 1685, 1775, 2343, 3707, 3905, 5055, 5325, 8425, 11121, 11715, 18535, 19525, 23927, 25275, 55605, 58575, 71781, 92675, 119635, 263197, 278025, 358905, 598175, 789591, 1315985, 1794525, 3947955, 6579925, 19739775]

約数ペア:

[(1, 19739775), (3, 6579925), (5, 3947955), (11, 1794525), (15, 1315985), (25, 789591), (33, 598175), (55, 358905), (71, 278025), (75, 263197), (165, 119635), (213, 92675), (275, 71781), (337, 58575), (355, 55605), (781, 25275), (825, 23927), (1011, 19525), (1065, 18535), (1685, 11715), (1775, 11121), (2343, 8425), (3707, 5325), (3905, 5055)]