1981119640

素因数分解:

$2^3\times 5^1\times {\mathrm{49527991}}^1$

素因数の和:49528002

約数の個数: 16

約数和(自身を含む): 4457519280

約数和(自身を除く): 2476399640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 49527991, 99055982, 198111964, 247639955, 396223928, 495279910, 990559820, 1981119640]

約数ペア:

[(1, 1981119640), (2, 990559820), (4, 495279910), (5, 396223928), (8, 247639955), (10, 198111964), (20, 99055982), (40, 49527991)]