19709902849

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1\times {\mathrm{19979}}^1$

素因数の和:20329

約数の個数: 32

約数和(自身を含む): 25000254720

約数和(自身を除く): 5290351871

約数列:

[1, 7, 13, 37, 91, 259, 293, 481, 2051, 3367, 3809, 10841, 19979, 26663, 75887, 139853, 140933, 259727, 739223, 986531, 1818089, 5174561, 5853847, 9609899, 40976929, 67269293, 76100011, 216592339, 532700077, 1516146373, 2815700407, 19709902849]

約数ペア:

[(1, 19709902849), (7, 2815700407), (13, 1516146373), (37, 532700077), (91, 216592339), (259, 76100011), (293, 67269293), (481, 40976929), (2051, 9609899), (3367, 5853847), (3809, 5174561), (10841, 1818089), (19979, 986531), (26663, 739223), (75887, 259727), (139853, 140933)]