19978562

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{4597}}^1$

素因数の和:4693

約数の個数: 16

約数和(自身を含む): 31284792

約数和(自身を除く): 11306230

約数列:

[1, 2, 41, 53, 82, 106, 2173, 4346, 4597, 9194, 188477, 243641, 376954, 487282, 9989281, 19978562]

約数ペア:

[(1, 19978562), (2, 9989281), (41, 487282), (53, 376954), (82, 243641), (106, 188477), (2173, 9194), (4346, 4597)]