21277347

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1321}}^1$

素因数の和:1403

約数の個数: 32

約数和(自身を含む): 35535360

約数和(自身を除く): 14258013

約数列:

[1, 3, 7, 13, 21, 39, 59, 91, 177, 273, 413, 767, 1239, 1321, 2301, 3963, 5369, 9247, 16107, 17173, 27741, 51519, 77939, 120211, 233817, 360633, 545573, 1013207, 1636719, 3039621, 7092449, 21277347]

約数ペア:

[(1, 21277347), (3, 7092449), (7, 3039621), (13, 1636719), (21, 1013207), (39, 545573), (59, 360633), (91, 233817), (177, 120211), (273, 77939), (413, 51519), (767, 27741), (1239, 17173), (1321, 16107), (2301, 9247), (3963, 5369)]