20403721919

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{13033}}^1$

素因数の和:13287

約数の個数: 32

約数和(自身を含む): 25025280000

約数和(自身を除く): 4621558081

約数列:

[1, 7, 19, 79, 133, 149, 553, 1043, 1501, 2831, 10507, 11771, 13033, 19817, 82397, 91231, 223649, 247627, 1029607, 1565543, 1733389, 1941917, 7207249, 13593419, 19562533, 36896423, 136937731, 153411443, 258274961, 1073880101, 2914817417, 20403721919]

約数ペア:

[(1, 20403721919), (7, 2914817417), (19, 1073880101), (79, 258274961), (133, 153411443), (149, 136937731), (553, 36896423), (1043, 19562533), (1501, 13593419), (2831, 7207249), (10507, 1941917), (11771, 1733389), (13033, 1565543), (19817, 1029607), (82397, 247627), (91231, 223649)]