21020703

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13553}}^1$

素因数の和:13614

約数の個数: 16

約数和(自身を含む): 31228416

約数和(自身を除く): 10207713

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13553, 40659, 149083, 447249, 636991, 1910973, 7006901, 21020703]

約数ペア:

[(1, 21020703), (3, 7006901), (11, 1910973), (33, 636991), (47, 447249), (141, 149083), (517, 40659), (1551, 13553)]