280806799

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{25931}}^1$

素因数の和:25975

約数の個数: 24

約数和(自身を含む): 372487248

約数和(自身を除く): 91680449

約数列:

[1, 7, 13, 17, 49, 91, 119, 221, 637, 833, 1547, 10829, 25931, 181517, 337103, 440827, 1270619, 2359721, 3085789, 5730751, 16518047, 21600523, 40115257, 280806799]

約数ペア:

[(1, 280806799), (7, 40115257), (13, 21600523), (17, 16518047), (49, 5730751), (91, 3085789), (119, 2359721), (221, 1270619), (637, 440827), (833, 337103), (1547, 181517), (10829, 25931)]