19512225

素因数分解:

$3^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 36277440

約数和(自身を除く): 16765215

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 137, 211, 225, 411, 633, 675, 685, 1055, 1233, 1899, 2055, 3165, 3425, 3699, 5275, 5697, 6165, 9495, 10275, 15825, 18495, 28485, 28907, 30825, 47475, 86721, 92475, 142425, 144535, 260163, 433605, 722675, 780489, 1300815, 2168025, 3902445, 6504075, 19512225]

約数ペア:

[(1, 19512225), (3, 6504075), (5, 3902445), (9, 2168025), (15, 1300815), (25, 780489), (27, 722675), (45, 433605), (75, 260163), (135, 144535), (137, 142425), (211, 92475), (225, 86721), (411, 47475), (633, 30825), (675, 28907), (685, 28485), (1055, 18495), (1233, 15825), (1899, 10275), (2055, 9495), (3165, 6165), (3425, 5697), (3699, 5275)]