18788861

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 24772608

約数和(自身を除く): 5983747

約数列:

[1, 7, 13, 23, 47, 91, 161, 191, 299, 329, 611, 1081, 1337, 2093, 2483, 4277, 4393, 7567, 8977, 14053, 17381, 30751, 57109, 62839, 98371, 116701, 206471, 399763, 816907, 1445297, 2684123, 18788861]

約数ペア:

[(1, 18788861), (7, 2684123), (13, 1445297), (23, 816907), (47, 399763), (91, 206471), (161, 116701), (191, 98371), (299, 62839), (329, 57109), (611, 30751), (1081, 17381), (1337, 14053), (2093, 8977), (2483, 7567), (4277, 4393)]