18510720

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:364

約数の個数: 128

約数和(自身を含む): 61102080

約数和(自身を除く): 42591360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 310, 311, 320, 372, 384, 465, 480, 496, 620, 622, 640, 744, 930, 933, 960, 992, 1240, 1244, 1488, 1555, 1860, 1866, 1920, 1984, 2480, 2488, 2976, 3110, 3720, 3732, 3968, 4665, 4960, 4976, 5952, 6220, 7440, 7464, 9330, 9641, 9920, 9952, 11904, 12440, 14880, 14928, 18660, 19282, 19840, 19904, 24880, 28923, 29760, 29856, 37320, 38564, 39808, 48205, 49760, 57846, 59520, 59712, 74640, 77128, 96410, 99520, 115692, 119424, 144615, 149280, 154256, 192820, 199040, 231384, 289230, 298560, 308512, 385640, 462768, 578460, 597120, 617024, 771280, 925536, 1156920, 1234048, 1542560, 1851072, 2313840, 3085120, 3702144, 4627680, 6170240, 9255360, 18510720]

約数ペア:

[(1, 18510720), (2, 9255360), (3, 6170240), (4, 4627680), (5, 3702144), (6, 3085120), (8, 2313840), (10, 1851072), (12, 1542560), (15, 1234048), (16, 1156920), (20, 925536), (24, 771280), (30, 617024), (31, 597120), (32, 578460), (40, 462768), (48, 385640), (60, 308512), (62, 298560), (64, 289230), (80, 231384), (93, 199040), (96, 192820), (120, 154256), (124, 149280), (128, 144615), (155, 119424), (160, 115692), (186, 99520), (192, 96410), (240, 77128), (248, 74640), (310, 59712), (311, 59520), (320, 57846), (372, 49760), (384, 48205), (465, 39808), (480, 38564), (496, 37320), (620, 29856), (622, 29760), (640, 28923), (744, 24880), (930, 19904), (933, 19840), (960, 19282), (992, 18660), (1240, 14928), (1244, 14880), (1488, 12440), (1555, 11904), (1860, 9952), (1866, 9920), (1920, 9641), (1984, 9330), (2480, 7464), (2488, 7440), (2976, 6220), (3110, 5952), (3720, 4976), (3732, 4960), (3968, 4665)]