82781580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{761}}^1$

素因数の和:824

約数の個数: 144

約数和(自身を含む): 277282656

約数和(自身を除く): 194501076

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 37, 42, 49, 60, 70, 74, 84, 98, 105, 111, 140, 147, 148, 185, 196, 210, 222, 245, 259, 294, 370, 420, 444, 490, 518, 555, 588, 735, 740, 761, 777, 980, 1036, 1110, 1295, 1470, 1522, 1554, 1813, 2220, 2283, 2590, 2940, 3044, 3108, 3626, 3805, 3885, 4566, 5180, 5327, 5439, 7252, 7610, 7770, 9065, 9132, 10654, 10878, 11415, 15220, 15540, 15981, 18130, 21308, 21756, 22830, 26635, 27195, 28157, 31962, 36260, 37289, 45660, 53270, 54390, 56314, 63924, 74578, 79905, 84471, 106540, 108780, 111867, 112628, 140785, 149156, 159810, 168942, 186445, 197099, 223734, 281570, 319620, 337884, 372890, 394198, 422355, 447468, 559335, 563140, 591297, 745780, 788396, 844710, 985495, 1118670, 1182594, 1379693, 1689420, 1970990, 2237340, 2365188, 2759386, 2956485, 3941980, 4139079, 5518772, 5912970, 6898465, 8278158, 11825940, 13796930, 16556316, 20695395, 27593860, 41390790, 82781580]

約数ペア:

[(1, 82781580), (2, 41390790), (3, 27593860), (4, 20695395), (5, 16556316), (6, 13796930), (7, 11825940), (10, 8278158), (12, 6898465), (14, 5912970), (15, 5518772), (20, 4139079), (21, 3941980), (28, 2956485), (30, 2759386), (35, 2365188), (37, 2237340), (42, 1970990), (49, 1689420), (60, 1379693), (70, 1182594), (74, 1118670), (84, 985495), (98, 844710), (105, 788396), (111, 745780), (140, 591297), (147, 563140), (148, 559335), (185, 447468), (196, 422355), (210, 394198), (222, 372890), (245, 337884), (259, 319620), (294, 281570), (370, 223734), (420, 197099), (444, 186445), (490, 168942), (518, 159810), (555, 149156), (588, 140785), (735, 112628), (740, 111867), (761, 108780), (777, 106540), (980, 84471), (1036, 79905), (1110, 74578), (1295, 63924), (1470, 56314), (1522, 54390), (1554, 53270), (1813, 45660), (2220, 37289), (2283, 36260), (2590, 31962), (2940, 28157), (3044, 27195), (3108, 26635), (3626, 22830), (3805, 21756), (3885, 21308), (4566, 18130), (5180, 15981), (5327, 15540), (5439, 15220), (7252, 11415), (7610, 10878), (7770, 10654), (9065, 9132)]