28707615

素因数分解:

$3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{971}}^1$

素因数の和:1061

約数の個数: 40

約数和(自身を含む): 52219728

約数和(自身を除く): 23512113

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 81, 135, 219, 365, 405, 657, 971, 1095, 1971, 2913, 3285, 4855, 5913, 8739, 9855, 14565, 26217, 29565, 43695, 70883, 78651, 131085, 212649, 354415, 393255, 637947, 1063245, 1913841, 3189735, 5741523, 9569205, 28707615]

約数ペア:

[(1, 28707615), (3, 9569205), (5, 5741523), (9, 3189735), (15, 1913841), (27, 1063245), (45, 637947), (73, 393255), (81, 354415), (135, 212649), (219, 131085), (365, 78651), (405, 70883), (657, 43695), (971, 29565), (1095, 26217), (1971, 14565), (2913, 9855), (3285, 8739), (4855, 5913)]