20997278

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{16691}}^1$

素因数の和:16747

約数の個数: 16

約数和(自身を含む): 34251984

約数和(自身を除く): 13254706

約数列:

[1, 2, 17, 34, 37, 74, 629, 1258, 16691, 33382, 283747, 567494, 617567, 1235134, 10498639, 20997278]

約数ペア:

[(1, 20997278), (2, 10498639), (17, 1235134), (34, 617567), (37, 567494), (74, 283747), (629, 33382), (1258, 16691)]