21893665

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1289}}^1$

素因数の和:1416

約数の個数: 16

約数和(自身を含む): 27244800

約数和(自身を除く): 5351135

約数列:

[1, 5, 43, 79, 215, 395, 1289, 3397, 6445, 16985, 55427, 101831, 277135, 509155, 4378733, 21893665]

約数ペア:

[(1, 21893665), (5, 4378733), (43, 509155), (79, 277135), (215, 101831), (395, 55427), (1289, 16985), (3397, 6445)]