17980137

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1669}}^1$

素因数の和:1707

約数の個数: 40

約数和(自身を含む): 32331200

約数和(自身を除く): 14351063

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 1669, 3591, 5007, 10773, 11683, 15021, 31711, 35049, 45063, 95133, 105147, 135189, 221977, 285399, 315441, 665931, 856197, 946323, 1997793, 2568591, 5993379, 17980137]

約数ペア:

[(1, 17980137), (3, 5993379), (7, 2568591), (9, 1997793), (19, 946323), (21, 856197), (27, 665931), (57, 315441), (63, 285399), (81, 221977), (133, 135189), (171, 105147), (189, 95133), (399, 45063), (513, 35049), (567, 31711), (1197, 15021), (1539, 11683), (1669, 10773), (3591, 5007)]