20478205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 28563840

約数和(自身を除く): 8085635

約数列:

[1, 5, 11, 29, 37, 55, 145, 185, 319, 347, 407, 1073, 1595, 1735, 2035, 3817, 5365, 10063, 11803, 12839, 19085, 50315, 59015, 64195, 110693, 141229, 372331, 553465, 706145, 1861655, 4095641, 20478205]

約数ペア:

[(1, 20478205), (5, 4095641), (11, 1861655), (29, 706145), (37, 553465), (55, 372331), (145, 141229), (185, 110693), (319, 64195), (347, 59015), (407, 50315), (1073, 19085), (1595, 12839), (1735, 11803), (2035, 10063), (3817, 5365)]