21789878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43063}}^1$

素因数の和:43099

約数の個数: 16

約数和(自身を含む): 37207296

約数和(自身を除く): 15417418

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43063, 86126, 473693, 947386, 990449, 1980898, 10894939, 21789878]

約数ペア:

[(1, 21789878), (2, 10894939), (11, 1980898), (22, 990449), (23, 947386), (46, 473693), (253, 86126), (506, 43063)]