20486880

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:409

約数の個数: 144

約数和(自身を含む): 71823024

約数和(自身を除く): 51336144

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 96, 120, 123, 144, 160, 164, 180, 205, 240, 246, 288, 328, 347, 360, 369, 410, 480, 492, 615, 656, 694, 720, 738, 820, 984, 1041, 1230, 1312, 1388, 1440, 1476, 1640, 1735, 1845, 1968, 2082, 2460, 2776, 2952, 3123, 3280, 3470, 3690, 3936, 4164, 4920, 5205, 5552, 5904, 6246, 6560, 6940, 7380, 8328, 9840, 10410, 11104, 11808, 12492, 13880, 14227, 14760, 15615, 16656, 19680, 20820, 24984, 27760, 28454, 29520, 31230, 33312, 41640, 42681, 49968, 55520, 56908, 59040, 62460, 71135, 83280, 85362, 99936, 113816, 124920, 128043, 142270, 166560, 170724, 213405, 227632, 249840, 256086, 284540, 341448, 426810, 455264, 499680, 512172, 569080, 640215, 682896, 853620, 1024344, 1138160, 1280430, 1365792, 1707240, 2048688, 2276320, 2560860, 3414480, 4097376, 5121720, 6828960, 10243440, 20486880]

約数ペア:

[(1, 20486880), (2, 10243440), (3, 6828960), (4, 5121720), (5, 4097376), (6, 3414480), (8, 2560860), (9, 2276320), (10, 2048688), (12, 1707240), (15, 1365792), (16, 1280430), (18, 1138160), (20, 1024344), (24, 853620), (30, 682896), (32, 640215), (36, 569080), (40, 512172), (41, 499680), (45, 455264), (48, 426810), (60, 341448), (72, 284540), (80, 256086), (82, 249840), (90, 227632), (96, 213405), (120, 170724), (123, 166560), (144, 142270), (160, 128043), (164, 124920), (180, 113816), (205, 99936), (240, 85362), (246, 83280), (288, 71135), (328, 62460), (347, 59040), (360, 56908), (369, 55520), (410, 49968), (480, 42681), (492, 41640), (615, 33312), (656, 31230), (694, 29520), (720, 28454), (738, 27760), (820, 24984), (984, 20820), (1041, 19680), (1230, 16656), (1312, 15615), (1388, 14760), (1440, 14227), (1476, 13880), (1640, 12492), (1735, 11808), (1845, 11104), (1968, 10410), (2082, 9840), (2460, 8328), (2776, 7380), (2952, 6940), (3123, 6560), (3280, 6246), (3470, 5904), (3690, 5552), (3936, 5205), (4164, 4920)]