19493955

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{709}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 37215360

約数和(自身を除く): 17721405

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 47, 65, 117, 141, 195, 235, 423, 585, 611, 705, 709, 1833, 2115, 2127, 3055, 3545, 5499, 6381, 9165, 9217, 10635, 27495, 27651, 31905, 33323, 46085, 82953, 99969, 138255, 166615, 299907, 414765, 433199, 499845, 1299597, 1499535, 2165995, 3898791, 6497985, 19493955]

約数ペア:

[(1, 19493955), (3, 6497985), (5, 3898791), (9, 2165995), (13, 1499535), (15, 1299597), (39, 499845), (45, 433199), (47, 414765), (65, 299907), (117, 166615), (141, 138255), (195, 99969), (235, 82953), (423, 46085), (585, 33323), (611, 31905), (705, 27651), (709, 27495), (1833, 10635), (2115, 9217), (2127, 9165), (3055, 6381), (3545, 5499)]