20964720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12479}}^1$

素因数の和:12502

約数の個数: 80

約数和(自身を含む): 74280960

約数和(自身を除く): 53316240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12479, 24958, 37437, 49916, 62395, 74874, 87353, 99832, 124790, 149748, 174706, 187185, 199664, 249580, 262059, 299496, 349412, 374370, 436765, 499160, 524118, 598992, 698824, 748740, 873530, 998320, 1048236, 1310295, 1397648, 1497480, 1747060, 2096472, 2620590, 2994960, 3494120, 4192944, 5241180, 6988240, 10482360, 20964720]

約数ペア:

[(1, 20964720), (2, 10482360), (3, 6988240), (4, 5241180), (5, 4192944), (6, 3494120), (7, 2994960), (8, 2620590), (10, 2096472), (12, 1747060), (14, 1497480), (15, 1397648), (16, 1310295), (20, 1048236), (21, 998320), (24, 873530), (28, 748740), (30, 698824), (35, 598992), (40, 524118), (42, 499160), (48, 436765), (56, 374370), (60, 349412), (70, 299496), (80, 262059), (84, 249580), (105, 199664), (112, 187185), (120, 174706), (140, 149748), (168, 124790), (210, 99832), (240, 87353), (280, 74874), (336, 62395), (420, 49916), (560, 37437), (840, 24958), (1680, 12479)]