81509818

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{353}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 134882496

約数和(自身を除く): 53372678

約数列:

[1, 2, 13, 26, 83, 107, 166, 214, 353, 706, 1079, 1391, 2158, 2782, 4589, 8881, 9178, 17762, 29299, 37771, 58598, 75542, 115453, 230906, 380887, 491023, 761774, 982046, 3134993, 6269986, 40754909, 81509818]

約数ペア:

[(1, 81509818), (2, 40754909), (13, 6269986), (26, 3134993), (83, 982046), (107, 761774), (166, 491023), (214, 380887), (353, 230906), (706, 115453), (1079, 75542), (1391, 58598), (2158, 37771), (2782, 29299), (4589, 17762), (8881, 9178)]