85839640

素因数分解:

$2^3\times 5^1\times {\mathrm{2145991}}^1$

素因数の和:2146002

約数の個数: 16

約数和(自身を含む): 193139280

約数和(自身を除く): 107299640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2145991, 4291982, 8583964, 10729955, 17167928, 21459910, 42919820, 85839640]

約数ペア:

[(1, 85839640), (2, 42919820), (4, 21459910), (5, 17167928), (8, 10729955), (10, 8583964), (20, 4291982), (40, 2145991)]