19780214

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{4441}}^1$

素因数の和:4591

約数の個数: 16

約数和(自身を含む): 31662576

約数和(自身を除く): 11882362

約数列:

[1, 2, 17, 34, 131, 262, 2227, 4441, 4454, 8882, 75497, 150994, 581771, 1163542, 9890107, 19780214]

約数ペア:

[(1, 19780214), (2, 9890107), (17, 1163542), (34, 581771), (131, 150994), (262, 75497), (2227, 8882), (4441, 4454)]