12720955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 17547264

約数和(自身を除く): 4826309

約数列:

[1, 5, 13, 23, 65, 67, 115, 127, 299, 335, 635, 871, 1495, 1541, 1651, 2921, 4355, 7705, 8255, 8509, 14605, 20033, 37973, 42545, 100165, 110617, 189865, 195707, 553085, 978535, 2544191, 12720955]

約数ペア:

[(1, 12720955), (5, 2544191), (13, 978535), (23, 553085), (65, 195707), (67, 189865), (115, 110617), (127, 100165), (299, 42545), (335, 37973), (635, 20033), (871, 14605), (1495, 8509), (1541, 8255), (1651, 7705), (2921, 4355)]