20640242

素因数分解:

$2^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{15199}}^1$

素因数の和:15305

約数の個数: 16

約数和(自身を含む): 35750400

約数和(自身を除く): 15110158

約数列:

[1, 2, 7, 14, 97, 194, 679, 1358, 15199, 30398, 106393, 212786, 1474303, 2948606, 10320121, 20640242]

約数ペア:

[(1, 20640242), (2, 10320121), (7, 2948606), (14, 1474303), (97, 212786), (194, 106393), (679, 30398), (1358, 15199)]