21192016

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{57587}}^1$

素因数の和:57618

約数の個数: 20

約数和(自身を含む): 42845472

約数和(自身を除く): 21653456

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 57587, 115174, 230348, 460696, 921392, 1324501, 2649002, 5298004, 10596008, 21192016]

約数ペア:

[(1, 21192016), (2, 10596008), (4, 5298004), (8, 2649002), (16, 1324501), (23, 921392), (46, 460696), (92, 230348), (184, 115174), (368, 57587)]