18391815

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 34725600

約数和(自身を除く): 16333785

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 149, 195, 211, 447, 585, 633, 745, 1055, 1341, 1899, 1937, 2235, 2743, 3165, 5811, 6705, 8229, 9495, 9685, 13715, 17433, 24687, 29055, 31439, 41145, 87165, 94317, 123435, 157195, 282951, 408707, 471585, 1226121, 1414755, 2043535, 3678363, 6130605, 18391815]

約数ペア:

[(1, 18391815), (3, 6130605), (5, 3678363), (9, 2043535), (13, 1414755), (15, 1226121), (39, 471585), (45, 408707), (65, 282951), (117, 157195), (149, 123435), (195, 94317), (211, 87165), (447, 41145), (585, 31439), (633, 29055), (745, 24687), (1055, 17433), (1341, 13715), (1899, 9685), (1937, 9495), (2235, 8229), (2743, 6705), (3165, 5811)]