81445140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1747}}^1$

素因数の和:1806

約数の個数: 144

約数和(自身を含む): 290140032

約数和(自身を除く): 208694892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 518, 555, 630, 666, 740, 777, 1036, 1110, 1260, 1295, 1332, 1554, 1665, 1747, 2220, 2331, 2590, 3108, 3330, 3494, 3885, 4662, 5180, 5241, 6660, 6988, 7770, 8735, 9324, 10482, 11655, 12229, 15540, 15723, 17470, 20964, 23310, 24458, 26205, 31446, 34940, 36687, 46620, 48916, 52410, 61145, 62892, 64639, 73374, 78615, 104820, 110061, 122290, 129278, 146748, 157230, 183435, 193917, 220122, 244580, 258556, 314460, 323195, 366870, 387834, 440244, 452473, 550305, 581751, 646390, 733740, 775668, 904946, 969585, 1100610, 1163502, 1292780, 1357419, 1809892, 1939170, 2201220, 2262365, 2327004, 2714838, 2908755, 3878340, 4072257, 4524730, 5429676, 5817510, 6787095, 8144514, 9049460, 11635020, 13574190, 16289028, 20361285, 27148380, 40722570, 81445140]

約数ペア:

[(1, 81445140), (2, 40722570), (3, 27148380), (4, 20361285), (5, 16289028), (6, 13574190), (7, 11635020), (9, 9049460), (10, 8144514), (12, 6787095), (14, 5817510), (15, 5429676), (18, 4524730), (20, 4072257), (21, 3878340), (28, 2908755), (30, 2714838), (35, 2327004), (36, 2262365), (37, 2201220), (42, 1939170), (45, 1809892), (60, 1357419), (63, 1292780), (70, 1163502), (74, 1100610), (84, 969585), (90, 904946), (105, 775668), (111, 733740), (126, 646390), (140, 581751), (148, 550305), (180, 452473), (185, 440244), (210, 387834), (222, 366870), (252, 323195), (259, 314460), (315, 258556), (333, 244580), (370, 220122), (420, 193917), (444, 183435), (518, 157230), (555, 146748), (630, 129278), (666, 122290), (740, 110061), (777, 104820), (1036, 78615), (1110, 73374), (1260, 64639), (1295, 62892), (1332, 61145), (1554, 52410), (1665, 48916), (1747, 46620), (2220, 36687), (2331, 34940), (2590, 31446), (3108, 26205), (3330, 24458), (3494, 23310), (3885, 20964), (4662, 17470), (5180, 15723), (5241, 15540), (6660, 12229), (6988, 11655), (7770, 10482), (8735, 9324)]