81432351

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:194

約数の個数: 128

約数和(自身を含む): 170311680

約数和(自身を除く): 88879329

約数列:

[1, 3, 7, 9, 11, 13, 21, 23, 27, 33, 39, 63, 69, 77, 91, 99, 117, 131, 143, 161, 189, 207, 231, 253, 273, 297, 299, 351, 393, 429, 483, 621, 693, 759, 819, 897, 917, 1001, 1179, 1287, 1441, 1449, 1703, 1771, 2079, 2093, 2277, 2457, 2691, 2751, 3003, 3013, 3289, 3537, 3861, 4323, 4347, 5109, 5313, 6279, 6831, 8073, 8253, 9009, 9039, 9867, 10087, 11921, 12969, 15327, 15939, 18733, 18837, 21091, 23023, 24759, 27027, 27117, 29601, 30261, 33143, 35763, 38907, 39169, 45981, 47817, 56199, 56511, 63273, 69069, 81351, 88803, 90783, 99429, 107289, 117507, 131131, 168597, 189819, 207207, 232001, 272349, 274183, 298287, 321867, 352521, 393393, 430859, 505791, 569457, 621621, 696003, 822549, 894861, 1057563, 1180179, 1292577, 2088009, 2467647, 3016013, 3540537, 3877731, 6264027, 7402941, 9048039, 11633193, 27144117, 81432351]

約数ペア:

[(1, 81432351), (3, 27144117), (7, 11633193), (9, 9048039), (11, 7402941), (13, 6264027), (21, 3877731), (23, 3540537), (27, 3016013), (33, 2467647), (39, 2088009), (63, 1292577), (69, 1180179), (77, 1057563), (91, 894861), (99, 822549), (117, 696003), (131, 621621), (143, 569457), (161, 505791), (189, 430859), (207, 393393), (231, 352521), (253, 321867), (273, 298287), (297, 274183), (299, 272349), (351, 232001), (393, 207207), (429, 189819), (483, 168597), (621, 131131), (693, 117507), (759, 107289), (819, 99429), (897, 90783), (917, 88803), (1001, 81351), (1179, 69069), (1287, 63273), (1441, 56511), (1449, 56199), (1703, 47817), (1771, 45981), (2079, 39169), (2093, 38907), (2277, 35763), (2457, 33143), (2691, 30261), (2751, 29601), (3003, 27117), (3013, 27027), (3289, 24759), (3537, 23023), (3861, 21091), (4323, 18837), (4347, 18733), (5109, 15939), (5313, 15327), (6279, 12969), (6831, 11921), (8073, 10087), (8253, 9867), (9009, 9039)]