21952557

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 37380096

約数和(自身を除く): 15427539

約数列:

[1, 3, 9, 11, 23, 31, 33, 69, 93, 99, 207, 253, 279, 311, 341, 713, 759, 933, 1023, 2139, 2277, 2799, 3069, 3421, 6417, 7153, 7843, 9641, 10263, 21459, 23529, 28923, 30789, 64377, 70587, 78683, 86769, 106051, 221743, 236049, 318153, 665229, 708147, 954459, 1995687, 2439173, 7317519, 21952557]

約数ペア:

[(1, 21952557), (3, 7317519), (9, 2439173), (11, 1995687), (23, 954459), (31, 708147), (33, 665229), (69, 318153), (93, 236049), (99, 221743), (207, 106051), (253, 86769), (279, 78683), (311, 70587), (341, 64377), (713, 30789), (759, 28923), (933, 23529), (1023, 21459), (2139, 10263), (2277, 9641), (2799, 7843), (3069, 7153), (3421, 6417)]