399531839

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{2801}}^1$

素因数の和:2927

約数の個数: 24

約数和(自身を含む): 482975136

約数和(自身を除く): 83443297

約数列:

[1, 7, 41, 49, 71, 287, 497, 2009, 2801, 2911, 3479, 19607, 20377, 114841, 137249, 142639, 198871, 803887, 1392097, 5627209, 8153711, 9744679, 57075977, 399531839]

約数ペア:

[(1, 399531839), (7, 57075977), (41, 9744679), (49, 8153711), (71, 5627209), (287, 1392097), (497, 803887), (2009, 198871), (2801, 142639), (2911, 137249), (3479, 114841), (19607, 20377)]