18778156

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{1171}}^1$

素因数の和:1405

約数の個数: 24

約数和(自身を含む): 34784960

約数和(自身を除く): 16006804

約数列:

[1, 2, 4, 19, 38, 76, 211, 422, 844, 1171, 2342, 4009, 4684, 8018, 16036, 22249, 44498, 88996, 247081, 494162, 988324, 4694539, 9389078, 18778156]

約数ペア:

[(1, 18778156), (2, 9389078), (4, 4694539), (19, 988324), (38, 494162), (76, 247081), (211, 88996), (422, 44498), (844, 22249), (1171, 16036), (2342, 8018), (4009, 4684)]