20754251

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:279

約数の個数: 24

約数和(自身を含む): 25749504

約数和(自身を除く): 4995253

約数列:

[1, 7, 19, 43, 133, 191, 301, 361, 817, 1337, 2527, 3629, 5719, 8213, 15523, 25403, 57491, 68951, 108661, 156047, 482657, 1092329, 2964893, 20754251]

約数ペア:

[(1, 20754251), (7, 2964893), (19, 1092329), (43, 482657), (133, 156047), (191, 108661), (301, 68951), (361, 57491), (817, 25403), (1337, 15523), (2527, 8213), (3629, 5719)]