21691675

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{18461}}^1$

素因数の和:18518

約数の個数: 12

約数和(自身を含む): 27471456

約数和(自身を除く): 5779781

約数列:

[1, 5, 25, 47, 235, 1175, 18461, 92305, 461525, 867667, 4338335, 21691675]

約数ペア:

[(1, 21691675), (5, 4338335), (25, 867667), (47, 461525), (235, 92305), (1175, 18461)]