209985139

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19391}}^1$

素因数の和:19435

約数の個数: 24

約数和(自身を含む): 278546688

約数和(自身を除く): 68561549

約数列:

[1, 7, 13, 17, 49, 91, 119, 221, 637, 833, 1547, 10829, 19391, 135737, 252083, 329647, 950159, 1764581, 2307529, 4285411, 12352067, 16152703, 29997877, 209985139]

約数ペア:

[(1, 209985139), (7, 29997877), (13, 16152703), (17, 12352067), (49, 4285411), (91, 2307529), (119, 1764581), (221, 950159), (637, 329647), (833, 252083), (1547, 135737), (10829, 19391)]