18821385

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{809}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 36391680

約数和(自身を除く): 17570295

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 47, 55, 99, 141, 165, 235, 423, 495, 517, 705, 809, 1551, 2115, 2427, 2585, 4045, 4653, 7281, 7755, 8899, 12135, 23265, 26697, 36405, 38023, 44495, 80091, 114069, 133485, 190115, 342207, 400455, 418253, 570345, 1254759, 1711035, 2091265, 3764277, 6273795, 18821385]

約数ペア:

[(1, 18821385), (3, 6273795), (5, 3764277), (9, 2091265), (11, 1711035), (15, 1254759), (33, 570345), (45, 418253), (47, 400455), (55, 342207), (99, 190115), (141, 133485), (165, 114069), (235, 80091), (423, 44495), (495, 38023), (517, 36405), (705, 26697), (809, 23265), (1551, 12135), (2115, 8899), (2427, 7755), (2585, 7281), (4045, 4653)]