18886648

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 39501000

約数和(自身を除く): 20614352

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 109, 121, 179, 218, 242, 358, 436, 484, 716, 872, 968, 1199, 1432, 1969, 2398, 3938, 4796, 7876, 9592, 13189, 15752, 19511, 21659, 26378, 39022, 43318, 52756, 78044, 86636, 105512, 156088, 173272, 214621, 429242, 858484, 1716968, 2360831, 4721662, 9443324, 18886648]

約数ペア:

[(1, 18886648), (2, 9443324), (4, 4721662), (8, 2360831), (11, 1716968), (22, 858484), (44, 429242), (88, 214621), (109, 173272), (121, 156088), (179, 105512), (218, 86636), (242, 78044), (358, 52756), (436, 43318), (484, 39022), (716, 26378), (872, 21659), (968, 19511), (1199, 15752), (1432, 13189), (1969, 9592), (2398, 7876), (3938, 4796)]