20413440

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{443}}^1$

素因数の和:474

約数の個数: 132

約数和(自身を含む): 70891704

約数和(自身を除く): 50478264

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 443, 480, 512, 576, 640, 720, 768, 886, 960, 1024, 1152, 1280, 1329, 1440, 1536, 1772, 1920, 2215, 2304, 2560, 2658, 2880, 3072, 3544, 3840, 3987, 4430, 4608, 5120, 5316, 5760, 6645, 7088, 7680, 7974, 8860, 9216, 10632, 11520, 13290, 14176, 15360, 15948, 17720, 19935, 21264, 23040, 26580, 28352, 31896, 35440, 39870, 42528, 46080, 53160, 56704, 63792, 70880, 79740, 85056, 106320, 113408, 127584, 141760, 159480, 170112, 212640, 226816, 255168, 283520, 318960, 340224, 425280, 453632, 510336, 567040, 637920, 680448, 850560, 1020672, 1134080, 1275840, 1360896, 1701120, 2041344, 2268160, 2551680, 3402240, 4082688, 5103360, 6804480, 10206720, 20413440]

約数ペア:

[(1, 20413440), (2, 10206720), (3, 6804480), (4, 5103360), (5, 4082688), (6, 3402240), (8, 2551680), (9, 2268160), (10, 2041344), (12, 1701120), (15, 1360896), (16, 1275840), (18, 1134080), (20, 1020672), (24, 850560), (30, 680448), (32, 637920), (36, 567040), (40, 510336), (45, 453632), (48, 425280), (60, 340224), (64, 318960), (72, 283520), (80, 255168), (90, 226816), (96, 212640), (120, 170112), (128, 159480), (144, 141760), (160, 127584), (180, 113408), (192, 106320), (240, 85056), (256, 79740), (288, 70880), (320, 63792), (360, 56704), (384, 53160), (443, 46080), (480, 42528), (512, 39870), (576, 35440), (640, 31896), (720, 28352), (768, 26580), (886, 23040), (960, 21264), (1024, 19935), (1152, 17720), (1280, 15948), (1329, 15360), (1440, 14176), (1536, 13290), (1772, 11520), (1920, 10632), (2215, 9216), (2304, 8860), (2560, 7974), (2658, 7680), (2880, 7088), (3072, 6645), (3544, 5760), (3840, 5316), (3987, 5120), (4430, 4608)]