19974544

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{30449}}^1$

素因数の和:30498

約数の個数: 20

約数和(自身を含む): 39645900

約数和(自身を除く): 19671356

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 30449, 60898, 121796, 243592, 487184, 1248409, 2496818, 4993636, 9987272, 19974544]

約数ペア:

[(1, 19974544), (2, 9987272), (4, 4993636), (8, 2496818), (16, 1248409), (41, 487184), (82, 243592), (164, 121796), (328, 60898), (656, 30449)]