18919654

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:400

約数の個数: 32

約数和(自身を含む): 31945536

約数和(自身を除く): 13025882

約数列:

[1, 2, 13, 26, 37, 71, 74, 142, 277, 481, 554, 923, 962, 1846, 2627, 3601, 5254, 7202, 10249, 19667, 20498, 34151, 39334, 68302, 133237, 255671, 266474, 511342, 727679, 1455358, 9459827, 18919654]

約数ペア:

[(1, 18919654), (2, 9459827), (13, 1455358), (26, 727679), (37, 511342), (71, 266474), (74, 255671), (142, 133237), (277, 68302), (481, 39334), (554, 34151), (923, 20498), (962, 19667), (1846, 10249), (2627, 7202), (3601, 5254)]