18967905

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 37635840

約数和(自身を除く): 18667935

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 53, 55, 99, 135, 159, 165, 241, 265, 297, 477, 495, 583, 723, 795, 1205, 1431, 1485, 1749, 2169, 2385, 2651, 2915, 3615, 5247, 6507, 7155, 7953, 8745, 10845, 12773, 13255, 15741, 23859, 26235, 32535, 38319, 39765, 63865, 71577, 78705, 114957, 119295, 140503, 191595, 344871, 357885, 421509, 574785, 702515, 1264527, 1724355, 2107545, 3793581, 6322635, 18967905]

約数ペア:

[(1, 18967905), (3, 6322635), (5, 3793581), (9, 2107545), (11, 1724355), (15, 1264527), (27, 702515), (33, 574785), (45, 421509), (53, 357885), (55, 344871), (99, 191595), (135, 140503), (159, 119295), (165, 114957), (241, 78705), (265, 71577), (297, 63865), (477, 39765), (495, 38319), (583, 32535), (723, 26235), (795, 23859), (1205, 15741), (1431, 13255), (1485, 12773), (1749, 10845), (2169, 8745), (2385, 7953), (2651, 7155), (2915, 6507), (3615, 5247)]