21068575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3331}}^1$

素因数の和:3375

約数の個数: 24

約数和(自身を含む): 29748096

約数和(自身を除く): 8679521

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 575, 1265, 3331, 6325, 16655, 36641, 76613, 83275, 183205, 383065, 842743, 916025, 1915325, 4213715, 21068575]

約数ペア:

[(1, 21068575), (5, 4213715), (11, 1915325), (23, 916025), (25, 842743), (55, 383065), (115, 183205), (253, 83275), (275, 76613), (575, 36641), (1265, 16655), (3331, 6325)]