18399745

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 28440720

約数和(自身を除く): 10040975

約数列:

[1, 5, 7, 13, 35, 49, 53, 65, 91, 109, 245, 265, 371, 455, 545, 637, 689, 763, 1417, 1855, 2597, 3185, 3445, 3815, 4823, 5341, 5777, 7085, 9919, 12985, 24115, 26705, 28885, 33761, 40439, 49595, 69433, 75101, 168805, 202195, 283073, 347165, 375505, 525707, 1415365, 2628535, 3679949, 18399745]

約数ペア:

[(1, 18399745), (5, 3679949), (7, 2628535), (13, 1415365), (35, 525707), (49, 375505), (53, 347165), (65, 283073), (91, 202195), (109, 168805), (245, 75101), (265, 69433), (371, 49595), (455, 40439), (545, 33761), (637, 28885), (689, 26705), (763, 24115), (1417, 12985), (1855, 9919), (2597, 7085), (3185, 5777), (3445, 5341), (3815, 4823)]