19657729

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 26078976

約数和(自身を除く): 6421247

約数列:

[1, 7, 13, 17, 91, 97, 119, 131, 221, 679, 917, 1261, 1547, 1649, 1703, 2227, 8827, 11543, 11921, 12707, 15589, 21437, 28951, 88949, 150059, 165191, 202657, 216019, 1156337, 1512133, 2808247, 19657729]

約数ペア:

[(1, 19657729), (7, 2808247), (13, 1512133), (17, 1156337), (91, 216019), (97, 202657), (119, 165191), (131, 150059), (221, 88949), (679, 28951), (917, 21437), (1261, 15589), (1547, 12707), (1649, 11921), (1703, 11543), (2227, 8827)]