20439985920

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{231431}}^1$

素因数の和:231478

約数の個数: 144

約数和(自身を含む): 68118769152

約数和(自身を除く): 47678783232

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 128, 138, 160, 184, 192, 230, 240, 256, 276, 320, 345, 368, 384, 460, 480, 552, 640, 690, 736, 768, 920, 960, 1104, 1280, 1380, 1472, 1840, 1920, 2208, 2760, 2944, 3680, 3840, 4416, 5520, 5888, 7360, 8832, 11040, 14720, 17664, 22080, 29440, 44160, 88320, 231431, 462862, 694293, 925724, 1157155, 1388586, 1851448, 2314310, 2777172, 3471465, 3702896, 4628620, 5322913, 5554344, 6942930, 7405792, 9257240, 10645826, 11108688, 13885860, 14811584, 15968739, 18514480, 21291652, 22217376, 26614565, 27771720, 29623168, 31937478, 37028960, 42583304, 44434752, 53229130, 55543440, 59246336, 63874956, 74057920, 79843695, 85166608, 88869504, 106458260, 111086880, 127749912, 148115840, 159687390, 170333216, 177739008, 212916520, 222173760, 255499824, 296231680, 319374780, 340666432, 425833040, 444347520, 510999648, 638749560, 681332864, 851666080, 888695040, 1021999296, 1277499120, 1362665728, 1703332160, 2043998592, 2554998240, 3406664320, 4087997184, 5109996480, 6813328640, 10219992960, 20439985920]

約数ペア:

[(1, 20439985920), (2, 10219992960), (3, 6813328640), (4, 5109996480), (5, 4087997184), (6, 3406664320), (8, 2554998240), (10, 2043998592), (12, 1703332160), (15, 1362665728), (16, 1277499120), (20, 1021999296), (23, 888695040), (24, 851666080), (30, 681332864), (32, 638749560), (40, 510999648), (46, 444347520), (48, 425833040), (60, 340666432), (64, 319374780), (69, 296231680), (80, 255499824), (92, 222173760), (96, 212916520), (115, 177739008), (120, 170333216), (128, 159687390), (138, 148115840), (160, 127749912), (184, 111086880), (192, 106458260), (230, 88869504), (240, 85166608), (256, 79843695), (276, 74057920), (320, 63874956), (345, 59246336), (368, 55543440), (384, 53229130), (460, 44434752), (480, 42583304), (552, 37028960), (640, 31937478), (690, 29623168), (736, 27771720), (768, 26614565), (920, 22217376), (960, 21291652), (1104, 18514480), (1280, 15968739), (1380, 14811584), (1472, 13885860), (1840, 11108688), (1920, 10645826), (2208, 9257240), (2760, 7405792), (2944, 6942930), (3680, 5554344), (3840, 5322913), (4416, 4628620), (5520, 3702896), (5888, 3471465), (7360, 2777172), (8832, 2314310), (11040, 1851448), (14720, 1388586), (17664, 1157155), (22080, 925724), (29440, 694293), (44160, 462862), (88320, 231431)]