81457605

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{373}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 148427136

約数和(自身を除く): 66969531

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 211, 345, 373, 633, 1035, 1055, 1119, 1865, 1899, 3165, 3357, 4853, 5595, 8579, 9495, 14559, 16785, 24265, 25737, 42895, 43677, 72795, 77211, 78703, 128685, 218385, 236109, 386055, 393515, 708327, 1180545, 1810169, 3541635, 5430507, 9050845, 16291521, 27152535, 81457605]

約数ペア:

[(1, 81457605), (3, 27152535), (5, 16291521), (9, 9050845), (15, 5430507), (23, 3541635), (45, 1810169), (69, 1180545), (115, 708327), (207, 393515), (211, 386055), (345, 236109), (373, 218385), (633, 128685), (1035, 78703), (1055, 77211), (1119, 72795), (1865, 43677), (1899, 42895), (3165, 25737), (3357, 24265), (4853, 16785), (5595, 14559), (8579, 9495)]