20397538

素因数分解:

$2^1\times 7^1\times {\mathrm{1021}}^1\times {\mathrm{1427}}^1$

素因数の和:2457

約数の個数: 16

約数和(自身を含む): 35025984

約数和(自身を除く): 14628446

約数列:

[1, 2, 7, 14, 1021, 1427, 2042, 2854, 7147, 9989, 14294, 19978, 1456967, 2913934, 10198769, 20397538]

約数ペア:

[(1, 20397538), (2, 10198769), (7, 2913934), (14, 1456967), (1021, 19978), (1427, 14294), (2042, 9989), (2854, 7147)]