20491680

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3881}}^1$

素因数の和:3910

約数の個数: 96

約数和(自身を含む): 70435008

約数和(自身を除く): 49943328

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 220, 240, 264, 330, 352, 440, 480, 528, 660, 880, 1056, 1320, 1760, 2640, 3881, 5280, 7762, 11643, 15524, 19405, 23286, 31048, 38810, 42691, 46572, 58215, 62096, 77620, 85382, 93144, 116430, 124192, 128073, 155240, 170764, 186288, 213455, 232860, 256146, 310480, 341528, 372576, 426910, 465720, 512292, 620960, 640365, 683056, 853820, 931440, 1024584, 1280730, 1366112, 1707640, 1862880, 2049168, 2561460, 3415280, 4098336, 5122920, 6830560, 10245840, 20491680]

約数ペア:

[(1, 20491680), (2, 10245840), (3, 6830560), (4, 5122920), (5, 4098336), (6, 3415280), (8, 2561460), (10, 2049168), (11, 1862880), (12, 1707640), (15, 1366112), (16, 1280730), (20, 1024584), (22, 931440), (24, 853820), (30, 683056), (32, 640365), (33, 620960), (40, 512292), (44, 465720), (48, 426910), (55, 372576), (60, 341528), (66, 310480), (80, 256146), (88, 232860), (96, 213455), (110, 186288), (120, 170764), (132, 155240), (160, 128073), (165, 124192), (176, 116430), (220, 93144), (240, 85382), (264, 77620), (330, 62096), (352, 58215), (440, 46572), (480, 42691), (528, 38810), (660, 31048), (880, 23286), (1056, 19405), (1320, 15524), (1760, 11643), (2640, 7762), (3881, 5280)]