21978633

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1\times {\mathrm{491}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 30134016

約数和(自身を除く): 8155383

約数列:

[1, 3, 43, 129, 347, 491, 1041, 1473, 14921, 21113, 44763, 63339, 170377, 511131, 7326211, 21978633]

約数ペア:

[(1, 21978633), (3, 7326211), (43, 511131), (129, 170377), (347, 63339), (491, 44763), (1041, 21113), (1473, 14921)]