20528378

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 34401024

約数和(自身を除く): 13872646

約数列:

[1, 2, 13, 26, 47, 94, 107, 157, 214, 314, 611, 1222, 1391, 2041, 2782, 4082, 5029, 7379, 10058, 14758, 16799, 33598, 65377, 95927, 130754, 191854, 218387, 436774, 789553, 1579106, 10264189, 20528378]

約数ペア:

[(1, 20528378), (2, 10264189), (13, 1579106), (26, 789553), (47, 436774), (94, 218387), (107, 191854), (157, 130754), (214, 95927), (314, 65377), (611, 33598), (1222, 16799), (1391, 14758), (2041, 10058), (2782, 7379), (4082, 5029)]