15439640

素因数分解:

$2^3\times 5^1\times {\mathrm{385991}}^1$

素因数の和:386002

約数の個数: 16

約数和(自身を含む): 34739280

約数和(自身を除く): 19299640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 385991, 771982, 1543964, 1929955, 3087928, 3859910, 7719820, 15439640]

約数ペア:

[(1, 15439640), (2, 7719820), (4, 3859910), (5, 3087928), (8, 1929955), (10, 1543964), (20, 771982), (40, 385991)]