20410775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 32997888

約数和(自身を除く): 12587113

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 115, 161, 175, 253, 275, 385, 461, 575, 805, 1265, 1771, 1925, 2305, 3227, 4025, 5071, 6325, 8855, 10603, 11525, 16135, 25355, 35497, 44275, 53015, 74221, 80675, 116633, 126775, 177485, 265075, 371105, 583165, 816431, 887425, 1855525, 2915825, 4082155, 20410775]

約数ペア:

[(1, 20410775), (5, 4082155), (7, 2915825), (11, 1855525), (23, 887425), (25, 816431), (35, 583165), (55, 371105), (77, 265075), (115, 177485), (161, 126775), (175, 116633), (253, 80675), (275, 74221), (385, 53015), (461, 44275), (575, 35497), (805, 25355), (1265, 16135), (1771, 11525), (1925, 10603), (2305, 8855), (3227, 6325), (4025, 5071)]