21627480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25747}}^1$

素因数の和:25768

約数の個数: 64

約数和(自身を含む): 74154240

約数和(自身を除く): 52526760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25747, 51494, 77241, 102988, 128735, 154482, 180229, 205976, 257470, 308964, 360458, 386205, 514940, 540687, 617928, 720916, 772410, 901145, 1029880, 1081374, 1441832, 1544820, 1802290, 2162748, 2703435, 3089640, 3604580, 4325496, 5406870, 7209160, 10813740, 21627480]

約数ペア:

[(1, 21627480), (2, 10813740), (3, 7209160), (4, 5406870), (5, 4325496), (6, 3604580), (7, 3089640), (8, 2703435), (10, 2162748), (12, 1802290), (14, 1544820), (15, 1441832), (20, 1081374), (21, 1029880), (24, 901145), (28, 772410), (30, 720916), (35, 617928), (40, 540687), (42, 514940), (56, 386205), (60, 360458), (70, 308964), (84, 257470), (105, 205976), (120, 180229), (140, 154482), (168, 128735), (210, 102988), (280, 77241), (420, 51494), (840, 25747)]