21764139

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 10338261

約数列:

[1, 3, 19, 31, 57, 93, 109, 113, 327, 339, 589, 1767, 2071, 2147, 3379, 3503, 6213, 6441, 10137, 10509, 12317, 36951, 64201, 66557, 192603, 199671, 234023, 381827, 702069, 1145481, 7254713, 21764139]

約数ペア:

[(1, 21764139), (3, 7254713), (19, 1145481), (31, 702069), (57, 381827), (93, 234023), (109, 199671), (113, 192603), (327, 66557), (339, 64201), (589, 36951), (1767, 12317), (2071, 10509), (2147, 10137), (3379, 6441), (3503, 6213)]