31245680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5501}}^1$

素因数の和:5585

約数の個数: 40

約数和(自身を含む): 73682784

約数和(自身を除く): 42437104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5501, 5680, 11002, 22004, 27505, 44008, 55010, 88016, 110020, 220040, 390571, 440080, 781142, 1562284, 1952855, 3124568, 3905710, 6249136, 7811420, 15622840, 31245680]

約数ペア:

[(1, 31245680), (2, 15622840), (4, 7811420), (5, 6249136), (8, 3905710), (10, 3124568), (16, 1952855), (20, 1562284), (40, 781142), (71, 440080), (80, 390571), (142, 220040), (284, 110020), (355, 88016), (568, 55010), (710, 44008), (1136, 27505), (1420, 22004), (2840, 11002), (5501, 5680)]