81185940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{313}}^1$

素因数の和:470

約数の個数: 144

約数和(自身を含む): 271567296

約数和(自身を除く): 190381356

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 131, 132, 165, 180, 198, 220, 262, 313, 330, 393, 396, 495, 524, 626, 655, 660, 786, 939, 990, 1179, 1252, 1310, 1441, 1565, 1572, 1878, 1965, 1980, 2358, 2620, 2817, 2882, 3130, 3443, 3756, 3930, 4323, 4695, 4716, 5634, 5764, 5895, 6260, 6886, 7205, 7860, 8646, 9390, 10329, 11268, 11790, 12969, 13772, 14085, 14410, 17215, 17292, 18780, 20658, 21615, 23580, 25938, 28170, 28820, 30987, 34430, 41003, 41316, 43230, 51645, 51876, 56340, 61974, 64845, 68860, 82006, 86460, 103290, 123009, 123948, 129690, 154935, 164012, 205015, 206580, 246018, 259380, 309870, 369027, 410030, 451033, 492036, 615045, 619740, 738054, 820060, 902066, 1230090, 1353099, 1476108, 1804132, 1845135, 2255165, 2460180, 2706198, 3690270, 4059297, 4510330, 5412396, 6765495, 7380540, 8118594, 9020660, 13530990, 16237188, 20296485, 27061980, 40592970, 81185940]

約数ペア:

[(1, 81185940), (2, 40592970), (3, 27061980), (4, 20296485), (5, 16237188), (6, 13530990), (9, 9020660), (10, 8118594), (11, 7380540), (12, 6765495), (15, 5412396), (18, 4510330), (20, 4059297), (22, 3690270), (30, 2706198), (33, 2460180), (36, 2255165), (44, 1845135), (45, 1804132), (55, 1476108), (60, 1353099), (66, 1230090), (90, 902066), (99, 820060), (110, 738054), (131, 619740), (132, 615045), (165, 492036), (180, 451033), (198, 410030), (220, 369027), (262, 309870), (313, 259380), (330, 246018), (393, 206580), (396, 205015), (495, 164012), (524, 154935), (626, 129690), (655, 123948), (660, 123009), (786, 103290), (939, 86460), (990, 82006), (1179, 68860), (1252, 64845), (1310, 61974), (1441, 56340), (1565, 51876), (1572, 51645), (1878, 43230), (1965, 41316), (1980, 41003), (2358, 34430), (2620, 30987), (2817, 28820), (2882, 28170), (3130, 25938), (3443, 23580), (3756, 21615), (3930, 20658), (4323, 18780), (4695, 17292), (4716, 17215), (5634, 14410), (5764, 14085), (5895, 13772), (6260, 12969), (6886, 11790), (7205, 11268), (7860, 10329), (8646, 9390)]