81491949

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 151733088

約数和(自身を除く): 70241139

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 107, 147, 157, 231, 321, 441, 471, 539, 693, 749, 963, 1099, 1177, 1413, 1617, 1727, 2247, 3297, 3531, 4851, 5181, 5243, 6741, 7693, 8239, 9891, 10593, 12089, 15543, 15729, 16799, 23079, 24717, 36267, 47187, 50397, 57673, 69237, 74151, 84623, 108801, 117593, 151191, 173019, 184789, 253869, 352779, 519057, 554367, 761607, 823151, 1058337, 1293523, 1663101, 2469453, 3880569, 7408359, 9054661, 11641707, 27163983, 81491949]

約数ペア:

[(1, 81491949), (3, 27163983), (7, 11641707), (9, 9054661), (11, 7408359), (21, 3880569), (33, 2469453), (49, 1663101), (63, 1293523), (77, 1058337), (99, 823151), (107, 761607), (147, 554367), (157, 519057), (231, 352779), (321, 253869), (441, 184789), (471, 173019), (539, 151191), (693, 117593), (749, 108801), (963, 84623), (1099, 74151), (1177, 69237), (1413, 57673), (1617, 50397), (1727, 47187), (2247, 36267), (3297, 24717), (3531, 23079), (4851, 16799), (5181, 15729), (5243, 15543), (6741, 12089), (7693, 10593), (8239, 9891)]