81113571

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{727}}^1$

素因数の和:781

約数の個数: 72

約数和(自身を含む): 155361024

約数和(自身を除く): 74247453

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 49, 63, 69, 77, 99, 147, 161, 207, 231, 253, 441, 483, 539, 693, 727, 759, 1127, 1449, 1617, 1771, 2181, 2277, 3381, 4851, 5089, 5313, 6543, 7997, 10143, 12397, 15267, 15939, 16721, 23991, 35623, 37191, 45801, 50163, 55979, 71973, 106869, 111573, 117047, 150489, 167937, 183931, 320607, 351141, 391853, 503811, 551793, 819329, 1053423, 1175559, 1287517, 1655379, 2457987, 3526677, 3862551, 7373961, 9012619, 11587653, 27037857, 81113571]

約数ペア:

[(1, 81113571), (3, 27037857), (7, 11587653), (9, 9012619), (11, 7373961), (21, 3862551), (23, 3526677), (33, 2457987), (49, 1655379), (63, 1287517), (69, 1175559), (77, 1053423), (99, 819329), (147, 551793), (161, 503811), (207, 391853), (231, 351141), (253, 320607), (441, 183931), (483, 167937), (539, 150489), (693, 117047), (727, 111573), (759, 106869), (1127, 71973), (1449, 55979), (1617, 50163), (1771, 45801), (2181, 37191), (2277, 35623), (3381, 23991), (4851, 16721), (5089, 15939), (5313, 15267), (6543, 12397), (7997, 10143)]