21272295

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128923}}^1$

素因数の和:128942

約数の個数: 16

約数和(自身を含む): 37130112

約数和(自身を除く): 15857817

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128923, 386769, 644615, 1418153, 1933845, 4254459, 7090765, 21272295]

約数ペア:

[(1, 21272295), (3, 7090765), (5, 4254459), (11, 1933845), (15, 1418153), (33, 644615), (55, 386769), (165, 128923)]