21091575

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12227}}^1$

素因数の和:12263

約数の個数: 24

約数和(自身を含む): 36390528

約数和(自身を除く): 15298953

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12227, 36681, 61135, 183405, 281221, 305675, 843663, 917025, 1406105, 4218315, 7030525, 21091575]

約数ペア:

[(1, 21091575), (3, 7030525), (5, 4218315), (15, 1406105), (23, 917025), (25, 843663), (69, 305675), (75, 281221), (115, 183405), (345, 61135), (575, 36681), (1725, 12227)]