20448603

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 36444096

約数和(自身を除く): 15995493

約数列:

[1, 3, 7, 9, 17, 21, 51, 61, 63, 119, 153, 183, 313, 357, 427, 549, 939, 1037, 1071, 1281, 2191, 2817, 3111, 3843, 5321, 6573, 7259, 9333, 15963, 19093, 19719, 21777, 37247, 47889, 57279, 65331, 111741, 133651, 171837, 324581, 335223, 400953, 973743, 1202859, 2272067, 2921229, 6816201, 20448603]

約数ペア:

[(1, 20448603), (3, 6816201), (7, 2921229), (9, 2272067), (17, 1202859), (21, 973743), (51, 400953), (61, 335223), (63, 324581), (119, 171837), (153, 133651), (183, 111741), (313, 65331), (357, 57279), (427, 47889), (549, 37247), (939, 21777), (1037, 19719), (1071, 19093), (1281, 15963), (2191, 9333), (2817, 7259), (3111, 6573), (3843, 5321)]