19943965

素因数分解:

$5^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{541}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 24546096

約数和(自身を除く): 4602131

約数列:

[1, 5, 73, 101, 365, 505, 541, 2705, 7373, 36865, 39493, 54641, 197465, 273205, 3988793, 19943965]

約数ペア:

[(1, 19943965), (5, 3988793), (73, 273205), (101, 197465), (365, 54641), (505, 39493), (541, 36865), (2705, 7373)]