19499935

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2521}}^1$

素因数の和:2563

約数の個数: 32

約数和(自身を含む): 30506112

約数和(自身を除く): 11006177

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 455, 595, 1105, 1547, 2521, 7735, 12605, 17647, 32773, 42857, 88235, 163865, 214285, 229411, 299999, 557141, 1147055, 1499995, 2785705, 3899987, 19499935]

約数ペア:

[(1, 19499935), (5, 3899987), (7, 2785705), (13, 1499995), (17, 1147055), (35, 557141), (65, 299999), (85, 229411), (91, 214285), (119, 163865), (221, 88235), (455, 42857), (595, 32773), (1105, 17647), (1547, 12605), (2521, 7735)]