21789976

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209519}}^1$

素因数の和:209538

約数の個数: 16

約数和(自身を含む): 43999200

約数和(自身を除く): 22209224

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209519, 419038, 838076, 1676152, 2723747, 5447494, 10894988, 21789976]

約数ペア:

[(1, 21789976), (2, 10894988), (4, 5447494), (8, 2723747), (13, 1676152), (26, 838076), (52, 419038), (104, 209519)]