28521465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^2\times {\mathrm{73}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 53748864

約数和(自身を除く): 25227399

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 73, 105, 183, 219, 305, 365, 427, 511, 915, 1095, 1281, 1533, 2135, 2555, 3721, 4453, 6405, 7665, 11163, 13359, 18605, 22265, 26047, 31171, 55815, 66795, 78141, 93513, 130235, 155855, 271633, 390705, 467565, 814899, 1358165, 1901431, 4074495, 5704293, 9507155, 28521465]

約数ペア:

[(1, 28521465), (3, 9507155), (5, 5704293), (7, 4074495), (15, 1901431), (21, 1358165), (35, 814899), (61, 467565), (73, 390705), (105, 271633), (183, 155855), (219, 130235), (305, 93513), (365, 78141), (427, 66795), (511, 55815), (915, 31171), (1095, 26047), (1281, 22265), (1533, 18605), (2135, 13359), (2555, 11163), (3721, 7665), (4453, 6405)]