20782440

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2749}}^1$

素因数の和:2776

約数の個数: 128

約数和(自身を含む): 79200000

約数和(自身を除く): 58417560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2749, 3780, 5498, 7560, 8247, 10996, 13745, 16494, 19243, 21992, 24741, 27490, 32988, 38486, 41235, 49482, 54980, 57729, 65976, 74223, 76972, 82470, 96215, 98964, 109960, 115458, 123705, 148446, 153944, 164940, 173187, 192430, 197928, 230916, 247410, 288645, 296892, 329880, 346374, 371115, 384860, 461832, 494820, 519561, 577290, 593784, 692748, 742230, 769720, 865935, 989640, 1039122, 1154580, 1385496, 1484460, 1731870, 2078244, 2309160, 2597805, 2968920, 3463740, 4156488, 5195610, 6927480, 10391220, 20782440]

約数ペア:

[(1, 20782440), (2, 10391220), (3, 6927480), (4, 5195610), (5, 4156488), (6, 3463740), (7, 2968920), (8, 2597805), (9, 2309160), (10, 2078244), (12, 1731870), (14, 1484460), (15, 1385496), (18, 1154580), (20, 1039122), (21, 989640), (24, 865935), (27, 769720), (28, 742230), (30, 692748), (35, 593784), (36, 577290), (40, 519561), (42, 494820), (45, 461832), (54, 384860), (56, 371115), (60, 346374), (63, 329880), (70, 296892), (72, 288645), (84, 247410), (90, 230916), (105, 197928), (108, 192430), (120, 173187), (126, 164940), (135, 153944), (140, 148446), (168, 123705), (180, 115458), (189, 109960), (210, 98964), (216, 96215), (252, 82470), (270, 76972), (280, 74223), (315, 65976), (360, 57729), (378, 54980), (420, 49482), (504, 41235), (540, 38486), (630, 32988), (756, 27490), (840, 24741), (945, 21992), (1080, 19243), (1260, 16494), (1512, 13745), (1890, 10996), (2520, 8247), (2749, 7560), (3780, 5498)]