18520383

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{349}}^1$

素因数の和:404

約数の個数: 36

約数和(自身を含む): 30403800

約数和(自身を除く): 11883417

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 349, 361, 399, 931, 1047, 1083, 2443, 2527, 2793, 6631, 7329, 7581, 17101, 17689, 19893, 46417, 51303, 53067, 125989, 139251, 324919, 377967, 881923, 974757, 2645769, 6173461, 18520383]

約数ペア:

[(1, 18520383), (3, 6173461), (7, 2645769), (19, 974757), (21, 881923), (49, 377967), (57, 324919), (133, 139251), (147, 125989), (349, 53067), (361, 51303), (399, 46417), (931, 19893), (1047, 17689), (1083, 17101), (2443, 7581), (2527, 7329), (2793, 6631)]