209715987

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{6781}}^1$

素因数の和:6871

約数の個数: 24

約数和(自身を含む): 307794288

約数和(自身を除く): 98078301

約数列:

[1, 3, 13, 39, 61, 169, 183, 507, 793, 2379, 6781, 10309, 20343, 30927, 88153, 264459, 413641, 1145989, 1240923, 3437967, 5377333, 16131999, 69905329, 209715987]

約数ペア:

[(1, 209715987), (3, 69905329), (13, 16131999), (39, 5377333), (61, 3437967), (169, 1240923), (183, 1145989), (507, 413641), (793, 264459), (2379, 88153), (6781, 30927), (10309, 20343)]