21789416

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{247607}}^1$

素因数の和:247624

約数の個数: 16

約数和(自身を含む): 44569440

約数和(自身を除く): 22780024

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 247607, 495214, 990428, 1980856, 2723677, 5447354, 10894708, 21789416]

約数ペア:

[(1, 21789416), (2, 10894708), (4, 5447354), (8, 2723677), (11, 1980856), (22, 990428), (44, 495214), (88, 247607)]