81130788

素因数分解:

$2^2\times 3^3\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 96

約数和(自身を含む): 219609600

約数和(自身を除く): 138478812

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 37, 54, 74, 79, 108, 111, 148, 158, 222, 237, 257, 316, 333, 444, 474, 514, 666, 711, 771, 948, 999, 1028, 1332, 1422, 1542, 1998, 2133, 2313, 2844, 2923, 3084, 3996, 4266, 4626, 5846, 6939, 8532, 8769, 9252, 9509, 11692, 13878, 17538, 19018, 20303, 26307, 27756, 28527, 35076, 38036, 40606, 52614, 57054, 60909, 78921, 81212, 85581, 105228, 114108, 121818, 157842, 171162, 182727, 243636, 256743, 315684, 342324, 365454, 513486, 548181, 730908, 751211, 1026972, 1096362, 1502422, 2192724, 2253633, 3004844, 4507266, 6760899, 9014532, 13521798, 20282697, 27043596, 40565394, 81130788]

約数ペア:

[(1, 81130788), (2, 40565394), (3, 27043596), (4, 20282697), (6, 13521798), (9, 9014532), (12, 6760899), (18, 4507266), (27, 3004844), (36, 2253633), (37, 2192724), (54, 1502422), (74, 1096362), (79, 1026972), (108, 751211), (111, 730908), (148, 548181), (158, 513486), (222, 365454), (237, 342324), (257, 315684), (316, 256743), (333, 243636), (444, 182727), (474, 171162), (514, 157842), (666, 121818), (711, 114108), (771, 105228), (948, 85581), (999, 81212), (1028, 78921), (1332, 60909), (1422, 57054), (1542, 52614), (1998, 40606), (2133, 38036), (2313, 35076), (2844, 28527), (2923, 27756), (3084, 26307), (3996, 20303), (4266, 19018), (4626, 17538), (5846, 13878), (6939, 11692), (8532, 9509), (8769, 9252)]