199987640

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{35969}}^1$

素因数の和:36119

約数の個数: 32

約数和(自身を含む): 453222000

約数和(自身を除く): 253234360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 35969, 71938, 143876, 179845, 287752, 359690, 719380, 1438760, 4999691, 9999382, 19998764, 24998455, 39997528, 49996910, 99993820, 199987640]

約数ペア:

[(1, 199987640), (2, 99993820), (4, 49996910), (5, 39997528), (8, 24998455), (10, 19998764), (20, 9999382), (40, 4999691), (139, 1438760), (278, 719380), (556, 359690), (695, 287752), (1112, 179845), (1390, 143876), (2780, 71938), (5560, 35969)]