18581031

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^3\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 48

約数和(自身を含む): 33130240

約数和(自身を除く): 14549209

約数列:

[1, 3, 7, 9, 19, 21, 43, 57, 63, 129, 133, 171, 301, 361, 387, 399, 817, 903, 1083, 1197, 2451, 2527, 2709, 3249, 5719, 6859, 7353, 7581, 15523, 17157, 20577, 22743, 46569, 48013, 51471, 61731, 108661, 139707, 144039, 294937, 325983, 432117, 884811, 977949, 2064559, 2654433, 6193677, 18581031]

約数ペア:

[(1, 18581031), (3, 6193677), (7, 2654433), (9, 2064559), (19, 977949), (21, 884811), (43, 432117), (57, 325983), (63, 294937), (129, 144039), (133, 139707), (171, 108661), (301, 61731), (361, 51471), (387, 48013), (399, 46569), (817, 22743), (903, 20577), (1083, 17157), (1197, 15523), (2451, 7581), (2527, 7353), (2709, 6859), (3249, 5719)]