21000912553

素因数分解:

${\mathrm{19}}^2\times {\mathrm{239}}^1\times {\mathrm{401}}^1\times {\mathrm{607}}^1$

素因数の和:1285

約数の個数: 24

約数和(自身を含む): 22349399040

約数和(自身を除く): 1348486487

約数列:

[1, 19, 239, 361, 401, 607, 4541, 7619, 11533, 86279, 95839, 144761, 145073, 219127, 243407, 1820941, 2756387, 4624733, 34597879, 52371353, 58174273, 87869927, 1105311187, 21000912553]

約数ペア:

[(1, 21000912553), (19, 1105311187), (239, 87869927), (361, 58174273), (401, 52371353), (607, 34597879), (4541, 4624733), (7619, 2756387), (11533, 1820941), (86279, 243407), (95839, 219127), (144761, 145073)]