81295880

素因数分解:

$2^3\times 5^1\times {\mathrm{479}}^1\times {\mathrm{4243}}^1$

素因数の和:4733

約数の個数: 32

約数和(自身を含む): 183340800

約数和(自身を除く): 102044920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 479, 958, 1916, 2395, 3832, 4243, 4790, 8486, 9580, 16972, 19160, 21215, 33944, 42430, 84860, 169720, 2032397, 4064794, 8129588, 10161985, 16259176, 20323970, 40647940, 81295880]

約数ペア:

[(1, 81295880), (2, 40647940), (4, 20323970), (5, 16259176), (8, 10161985), (10, 8129588), (20, 4064794), (40, 2032397), (479, 169720), (958, 84860), (1916, 42430), (2395, 33944), (3832, 21215), (4243, 19160), (4790, 16972), (8486, 9580)]