20581484

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3517}}^1$

素因数の和:3558

約数の個数: 48

約数和(自身を含む): 47281920

約数和(自身を除く): 26700436

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2926, 3517, 5852, 7034, 14068, 24619, 38687, 49238, 66823, 77374, 98476, 133646, 154748, 267292, 270809, 467761, 541618, 735053, 935522, 1083236, 1470106, 1871044, 2940212, 5145371, 10290742, 20581484]

約数ペア:

[(1, 20581484), (2, 10290742), (4, 5145371), (7, 2940212), (11, 1871044), (14, 1470106), (19, 1083236), (22, 935522), (28, 735053), (38, 541618), (44, 467761), (76, 270809), (77, 267292), (133, 154748), (154, 133646), (209, 98476), (266, 77374), (308, 66823), (418, 49238), (532, 38687), (836, 24619), (1463, 14068), (2926, 7034), (3517, 5852)]