12780182020

素因数分解:

$2^2\times 5^1\times {\mathrm{12497}}^1\times {\mathrm{51133}}^1$

素因数の和:63639

約数の個数: 24

約数和(自身を含む): 26841054744

約数和(自身を除く): 14060872724

約数列:

[1, 2, 4, 5, 10, 20, 12497, 24994, 49988, 51133, 62485, 102266, 124970, 204532, 249940, 255665, 511330, 1022660, 639009101, 1278018202, 2556036404, 3195045505, 6390091010, 12780182020]

約数ペア:

[(1, 12780182020), (2, 6390091010), (4, 3195045505), (5, 2556036404), (10, 1278018202), (20, 639009101), (12497, 1022660), (24994, 511330), (49988, 255665), (51133, 249940), (62485, 204532), (102266, 124970)]