21703928

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{142789}}^1$

素因数の和:142814

約数の個数: 16

約数和(自身を含む): 42837000

約数和(自身を除く): 21133072

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 142789, 285578, 571156, 1142312, 2712991, 5425982, 10851964, 21703928]

約数ペア:

[(1, 21703928), (2, 10851964), (4, 5425982), (8, 2712991), (19, 1142312), (38, 571156), (76, 285578), (152, 142789)]