20819827

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:498

約数の個数: 16

約数和(自身を含む): 24371712

約数和(自身を除く): 3551885

約数列:

[1, 7, 71, 163, 257, 497, 1141, 1799, 11573, 18247, 41891, 81011, 127729, 293237, 2974261, 20819827]

約数ペア:

[(1, 20819827), (7, 2974261), (71, 293237), (163, 127729), (257, 81011), (497, 41891), (1141, 18247), (1799, 11573)]