18439421

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{109}}^1$

素因数の和:166

約数の個数: 32

約数和(自身を含む): 25132800

約数和(自身を除く): 6693379

約数列:

[1, 7, 11, 13, 77, 91, 109, 143, 169, 763, 1001, 1183, 1199, 1417, 1859, 2197, 8393, 9919, 13013, 15379, 15587, 18421, 24167, 109109, 128947, 169169, 202631, 239473, 1418417, 1676311, 2634203, 18439421]

約数ペア:

[(1, 18439421), (7, 2634203), (11, 1676311), (13, 1418417), (77, 239473), (91, 202631), (109, 169169), (143, 128947), (169, 109109), (763, 24167), (1001, 18421), (1183, 15587), (1199, 15379), (1417, 13013), (1859, 9919), (2197, 8393)]