198531

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:77

約数の個数: 24

約数和(自身を含む): 320320

約数和(自身を除く): 121789

約数列:

[1, 3, 9, 19, 27, 43, 57, 81, 129, 171, 243, 387, 513, 817, 1161, 1539, 2451, 3483, 4617, 7353, 10449, 22059, 66177, 198531]

約数ペア:

[(1, 198531), (3, 66177), (9, 22059), (19, 10449), (27, 7353), (43, 4617), (57, 3483), (81, 2451), (129, 1539), (171, 1161), (243, 817), (387, 513)]