21393112

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205703}}^1$

素因数の和:205722

約数の個数: 16

約数和(自身を含む): 43197840

約数和(自身を除く): 21804728

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205703, 411406, 822812, 1645624, 2674139, 5348278, 10696556, 21393112]

約数ペア:

[(1, 21393112), (2, 10696556), (4, 5348278), (8, 2674139), (13, 1645624), (26, 822812), (52, 411406), (104, 205703)]