21131403

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{1499}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 29184000

約数和(自身を除く): 8052597

約数列:

[1, 3, 37, 111, 127, 381, 1499, 4497, 4699, 14097, 55463, 166389, 190373, 571119, 7043801, 21131403]

約数ペア:

[(1, 21131403), (3, 7043801), (37, 571119), (111, 190373), (127, 166389), (381, 55463), (1499, 14097), (4497, 4699)]