201990019

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{238477}}^1$

素因数の和:238506

約数の個数: 12

約数和(自身を含む): 253740592

約数和(自身を除く): 51750573

約数列:

[1, 7, 11, 77, 121, 847, 238477, 1669339, 2623247, 18362729, 28855717, 201990019]

約数ペア:

[(1, 201990019), (7, 28855717), (11, 18362729), (77, 2623247), (121, 1669339), (847, 238477)]