21420804970

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1471}}^1\times {\mathrm{18433}}^1$

素因数の和:19990

約数の個数: 32

約数和(自身を含む): 39074181120

約数和(自身を除く): 17653376150

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 1471, 2942, 7355, 14710, 18433, 36866, 92165, 116209, 184330, 232418, 581045, 1162090, 1456207, 2912414, 7281035, 14562070, 27114943, 54229886, 135574715, 271149430, 2142080497, 4284160994, 10710402485, 21420804970]

約数ペア:

[(1, 21420804970), (2, 10710402485), (5, 4284160994), (10, 2142080497), (79, 271149430), (158, 135574715), (395, 54229886), (790, 27114943), (1471, 14562070), (2942, 7281035), (7355, 2912414), (14710, 1456207), (18433, 1162090), (36866, 581045), (92165, 232418), (116209, 184330)]