19444815

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{773}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 37189152

約数和(自身を除く): 17744337

約数列:

[1, 3, 5, 9, 13, 15, 39, 43, 45, 65, 117, 129, 195, 215, 387, 559, 585, 645, 773, 1677, 1935, 2319, 2795, 3865, 5031, 6957, 8385, 10049, 11595, 25155, 30147, 33239, 34785, 50245, 90441, 99717, 150735, 166195, 299151, 432107, 452205, 498585, 1296321, 1495755, 2160535, 3888963, 6481605, 19444815]

約数ペア:

[(1, 19444815), (3, 6481605), (5, 3888963), (9, 2160535), (13, 1495755), (15, 1296321), (39, 498585), (43, 452205), (45, 432107), (65, 299151), (117, 166195), (129, 150735), (195, 99717), (215, 90441), (387, 50245), (559, 34785), (585, 33239), (645, 30147), (773, 25155), (1677, 11595), (1935, 10049), (2319, 8385), (2795, 6957), (3865, 5031)]