18995938

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{1307}}^1$

素因数の和:1378

約数の個数: 24

約数和(自身を含む): 31596048

約数和(自身を除く): 12600110

約数列:

[1, 2, 13, 26, 43, 86, 169, 338, 559, 1118, 1307, 2614, 7267, 14534, 16991, 33982, 56201, 112402, 220883, 441766, 730613, 1461226, 9497969, 18995938]

約数ペア:

[(1, 18995938), (2, 9497969), (13, 1461226), (26, 730613), (43, 441766), (86, 220883), (169, 112402), (338, 56201), (559, 33982), (1118, 16991), (1307, 14534), (2614, 7267)]