127777209

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1993}}^1$

素因数の和:2117

約数の個数: 32

約数和(自身を含む): 202143744

約数和(自身を除く): 74366535

約数列:

[1, 3, 7, 21, 43, 71, 129, 213, 301, 497, 903, 1491, 1993, 3053, 5979, 9159, 13951, 21371, 41853, 64113, 85699, 141503, 257097, 424509, 599893, 990521, 1799679, 2971563, 6084629, 18253887, 42592403, 127777209]

約数ペア:

[(1, 127777209), (3, 42592403), (7, 18253887), (21, 6084629), (43, 2971563), (71, 1799679), (129, 990521), (213, 599893), (301, 424509), (497, 257097), (903, 141503), (1491, 85699), (1993, 64113), (3053, 41853), (5979, 21371), (9159, 13951)]