18893469

素因数分解:

$3^1\times 7^4\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:135

約数の個数: 40

約数和(自身を含む): 30564512

約数和(自身を除く): 11671043

約数列:

[1, 3, 7, 21, 43, 49, 61, 129, 147, 183, 301, 343, 427, 903, 1029, 1281, 2107, 2401, 2623, 2989, 6321, 7203, 7869, 8967, 14749, 18361, 20923, 44247, 55083, 62769, 103243, 128527, 146461, 309729, 385581, 439383, 899689, 2699067, 6297823, 18893469]

約数ペア:

[(1, 18893469), (3, 6297823), (7, 2699067), (21, 899689), (43, 439383), (49, 385581), (61, 309729), (129, 146461), (147, 128527), (183, 103243), (301, 62769), (343, 55083), (427, 44247), (903, 20923), (1029, 18361), (1281, 14749), (2107, 8967), (2401, 7869), (2623, 7203), (2989, 6321)]