19704399

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1997}}^1$

素因数の和:2047

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 12519345

約数列:

[1, 3, 11, 13, 23, 33, 39, 69, 143, 253, 299, 429, 759, 897, 1997, 3289, 5991, 9867, 21967, 25961, 45931, 65901, 77883, 137793, 285571, 505241, 597103, 856713, 1515723, 1791309, 6568133, 19704399]

約数ペア:

[(1, 19704399), (3, 6568133), (11, 1791309), (13, 1515723), (23, 856713), (33, 597103), (39, 505241), (69, 285571), (143, 137793), (253, 77883), (299, 65901), (429, 45931), (759, 25961), (897, 21967), (1997, 9867), (3289, 5991)]