19980394

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20101}}^1$

素因数の和:20181

約数の個数: 16

約数和(自身を含む): 34736256

約数和(自身を除く): 14755862

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 20101, 40202, 140707, 281414, 1427171, 2854342, 9990197, 19980394]

約数ペア:

[(1, 19980394), (2, 9990197), (7, 2854342), (14, 1427171), (71, 281414), (142, 140707), (497, 40202), (994, 20101)]