28478325

素因数分解:

$3^1\times 5^2\times {\mathrm{431}}^1\times {\mathrm{881}}^1$

素因数の和:1325

約数の個数: 24

約数和(自身を含む): 47246976

約数和(自身を除く): 18768651

約数列:

[1, 3, 5, 15, 25, 75, 431, 881, 1293, 2155, 2643, 4405, 6465, 10775, 13215, 22025, 32325, 66075, 379711, 1139133, 1898555, 5695665, 9492775, 28478325]

約数ペア:

[(1, 28478325), (3, 9492775), (5, 5695665), (15, 1898555), (25, 1139133), (75, 379711), (431, 66075), (881, 32325), (1293, 22025), (2155, 13215), (2643, 10775), (4405, 6465)]