20990008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201827}}^1$

素因数の和:201846

約数の個数: 16

約数和(自身を含む): 42383880

約数和(自身を除く): 21393872

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201827, 403654, 807308, 1614616, 2623751, 5247502, 10495004, 20990008]

約数ペア:

[(1, 20990008), (2, 10495004), (4, 5247502), (8, 2623751), (13, 1614616), (26, 807308), (52, 403654), (104, 201827)]