20801760

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:217

約数の個数: 192

約数和(自身を含む): 77220864

約数和(自身を除く): 56419104

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 41, 42, 48, 56, 60, 70, 80, 82, 84, 96, 105, 112, 120, 123, 140, 151, 160, 164, 168, 205, 210, 224, 240, 246, 280, 287, 302, 328, 336, 410, 420, 453, 480, 492, 560, 574, 604, 615, 656, 672, 755, 820, 840, 861, 906, 984, 1057, 1120, 1148, 1208, 1230, 1312, 1435, 1510, 1640, 1680, 1722, 1812, 1968, 2114, 2265, 2296, 2416, 2460, 2870, 3020, 3171, 3280, 3360, 3444, 3624, 3936, 4228, 4305, 4530, 4592, 4832, 4920, 5285, 5740, 6040, 6191, 6342, 6560, 6888, 7248, 8456, 8610, 9060, 9184, 9840, 10570, 11480, 12080, 12382, 12684, 13776, 14496, 15855, 16912, 17220, 18120, 18573, 19680, 21140, 22960, 24160, 24764, 25368, 27552, 30955, 31710, 33824, 34440, 36240, 37146, 42280, 43337, 45920, 49528, 50736, 61910, 63420, 68880, 72480, 74292, 84560, 86674, 92865, 99056, 101472, 123820, 126840, 130011, 137760, 148584, 169120, 173348, 185730, 198112, 216685, 247640, 253680, 260022, 297168, 346696, 371460, 433370, 495280, 507360, 520044, 594336, 650055, 693392, 742920, 866740, 990560, 1040088, 1300110, 1386784, 1485840, 1733480, 2080176, 2600220, 2971680, 3466960, 4160352, 5200440, 6933920, 10400880, 20801760]

約数ペア:

[(1, 20801760), (2, 10400880), (3, 6933920), (4, 5200440), (5, 4160352), (6, 3466960), (7, 2971680), (8, 2600220), (10, 2080176), (12, 1733480), (14, 1485840), (15, 1386784), (16, 1300110), (20, 1040088), (21, 990560), (24, 866740), (28, 742920), (30, 693392), (32, 650055), (35, 594336), (40, 520044), (41, 507360), (42, 495280), (48, 433370), (56, 371460), (60, 346696), (70, 297168), (80, 260022), (82, 253680), (84, 247640), (96, 216685), (105, 198112), (112, 185730), (120, 173348), (123, 169120), (140, 148584), (151, 137760), (160, 130011), (164, 126840), (168, 123820), (205, 101472), (210, 99056), (224, 92865), (240, 86674), (246, 84560), (280, 74292), (287, 72480), (302, 68880), (328, 63420), (336, 61910), (410, 50736), (420, 49528), (453, 45920), (480, 43337), (492, 42280), (560, 37146), (574, 36240), (604, 34440), (615, 33824), (656, 31710), (672, 30955), (755, 27552), (820, 25368), (840, 24764), (861, 24160), (906, 22960), (984, 21140), (1057, 19680), (1120, 18573), (1148, 18120), (1208, 17220), (1230, 16912), (1312, 15855), (1435, 14496), (1510, 13776), (1640, 12684), (1680, 12382), (1722, 12080), (1812, 11480), (1968, 10570), (2114, 9840), (2265, 9184), (2296, 9060), (2416, 8610), (2460, 8456), (2870, 7248), (3020, 6888), (3171, 6560), (3280, 6342), (3360, 6191), (3444, 6040), (3624, 5740), (3936, 5285), (4228, 4920), (4305, 4832), (4530, 4592)]