18616409

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 23042880

約数和(自身を除く): 4426471

約数列:

[1, 7, 19, 53, 133, 139, 361, 371, 973, 1007, 2527, 2641, 7049, 7367, 18487, 19133, 50179, 51569, 133931, 139973, 351253, 979811, 2659487, 18616409]

約数ペア:

[(1, 18616409), (7, 2659487), (19, 979811), (53, 351253), (133, 139973), (139, 133931), (361, 51569), (371, 50179), (973, 19133), (1007, 18487), (2527, 7367), (2641, 7049)]