81931941

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1409}}^1$

素因数の和:1506

約数の個数: 48

約数和(自身を含む): 147813120

約数和(自身を除く): 65881179

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 71, 91, 117, 213, 273, 497, 639, 819, 923, 1409, 1491, 2769, 4227, 4473, 6461, 8307, 9863, 12681, 18317, 19383, 29589, 54951, 58149, 88767, 100039, 128219, 164853, 300117, 384657, 700273, 900351, 1153971, 1300507, 2100819, 3901521, 6302457, 9103549, 11704563, 27310647, 81931941]

約数ペア:

[(1, 81931941), (3, 27310647), (7, 11704563), (9, 9103549), (13, 6302457), (21, 3901521), (39, 2100819), (63, 1300507), (71, 1153971), (91, 900351), (117, 700273), (213, 384657), (273, 300117), (497, 164853), (639, 128219), (819, 100039), (923, 88767), (1409, 58149), (1491, 54951), (2769, 29589), (4227, 19383), (4473, 18317), (6461, 12681), (8307, 9863)]