81693780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{751}}^1$

素因数の和:814

約数の個数: 144

約数和(自身を含む): 273643776

約数和(自身を除く): 191949996

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, 751, 777, 980, 1036, 1110, 1295, 1470, 1502, 1554, 1813, 2220, 2253, 2590, 2940, 3004, 3108, 3626, 3755, 3885, 4506, 5180, 5257, 5439, 7252, 7510, 7770, 9012, 9065, 10514, 10878, 11265, 15020, 15540, 15771, 18130, 21028, 21756, 22530, 26285, 27195, 27787, 31542, 36260, 36799, 45060, 52570, 54390, 55574, 63084, 73598, 78855, 83361, 105140, 108780, 110397, 111148, 138935, 147196, 157710, 166722, 183995, 194509, 220794, 277870, 315420, 333444, 367990, 389018, 416805, 441588, 551985, 555740, 583527, 735980, 778036, 833610, 972545, 1103970, 1167054, 1361563, 1667220, 1945090, 2207940, 2334108, 2723126, 2917635, 3890180, 4084689, 5446252, 5835270, 6807815, 8169378, 11670540, 13615630, 16338756, 20423445, 27231260, 40846890, 81693780]

約数ペア:

[(1, 81693780), (2, 40846890), (3, 27231260), (4, 20423445), (5, 16338756), (6, 13615630), (7, 11670540), (10, 8169378), (12, 6807815), (14, 5835270), (15, 5446252), (20, 4084689), (21, 3890180), (28, 2917635), (30, 2723126), (35, 2334108), (37, 2207940), (42, 1945090), (49, 1667220), (60, 1361563), (70, 1167054), (74, 1103970), (84, 972545), (98, 833610), (105, 778036), (111, 735980), (140, 583527), (147, 555740), (148, 551985), (185, 441588), (196, 416805), (210, 389018), (222, 367990), (245, 333444), (259, 315420), (294, 277870), (370, 220794), (420, 194509), (444, 183995), (490, 166722), (518, 157710), (555, 147196), (588, 138935), (735, 111148), (740, 110397), (751, 108780), (777, 105140), (980, 83361), (1036, 78855), (1110, 73598), (1295, 63084), (1470, 55574), (1502, 54390), (1554, 52570), (1813, 45060), (2220, 36799), (2253, 36260), (2590, 31542), (2940, 27787), (3004, 27195), (3108, 26285), (3626, 22530), (3755, 21756), (3885, 21028), (4506, 18130), (5180, 15771), (5257, 15540), (5439, 15020), (7252, 11265), (7510, 10878), (7770, 10514), (9012, 9065)]