205921989

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{251431}}^1$

素因数の和:251457

約数の個数: 24

約数和(自身を含む): 366084992

約数和(自身を除く): 160163003

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 251431, 754293, 1760017, 2262879, 3268603, 5280051, 9805809, 15840153, 22880221, 29417427, 68640663, 205921989]

約数ペア:

[(1, 205921989), (3, 68640663), (7, 29417427), (9, 22880221), (13, 15840153), (21, 9805809), (39, 5280051), (63, 3268603), (91, 2262879), (117, 1760017), (273, 754293), (819, 251431)]