21003928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{238681}}^1$

素因数の和:238698

約数の個数: 16

約数和(自身を含む): 42962760

約数和(自身を除く): 21958832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 238681, 477362, 954724, 1909448, 2625491, 5250982, 10501964, 21003928]

約数ペア:

[(1, 21003928), (2, 10501964), (4, 5250982), (8, 2625491), (11, 1909448), (22, 954724), (44, 477362), (88, 238681)]