12640839

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 18585600

約数和(自身を除く): 5944761

約数列:

[1, 3, 29, 31, 43, 87, 93, 109, 129, 327, 899, 1247, 1333, 2697, 3161, 3379, 3741, 3999, 4687, 9483, 10137, 14061, 38657, 97991, 115971, 135923, 145297, 293973, 407769, 435891, 4213613, 12640839]

約数ペア:

[(1, 12640839), (3, 4213613), (29, 435891), (31, 407769), (43, 293973), (87, 145297), (93, 135923), (109, 115971), (129, 97991), (327, 38657), (899, 14061), (1247, 10137), (1333, 9483), (2697, 4687), (3161, 3999), (3379, 3741)]