81102020

素因数分解:

$2^2\times 5^1\times {\mathrm{1153}}^1\times {\mathrm{3517}}^1$

素因数の和:4679

約数の個数: 24

約数和(自身を含む): 170510424

約数和(自身を除く): 89408404

約数列:

[1, 2, 4, 5, 10, 20, 1153, 2306, 3517, 4612, 5765, 7034, 11530, 14068, 17585, 23060, 35170, 70340, 4055101, 8110202, 16220404, 20275505, 40551010, 81102020]

約数ペア:

[(1, 81102020), (2, 40551010), (4, 20275505), (5, 16220404), (10, 8110202), (20, 4055101), (1153, 70340), (2306, 35170), (3517, 23060), (4612, 17585), (5765, 14068), (7034, 11530)]