388049697

素因数分解:

$3^4\times 7^1\times {\mathrm{257}}^1\times {\mathrm{2663}}^1$

素因数の和:2939

約数の個数: 40

約数和(自身を含む): 665318016

約数和(自身を除く): 277268319

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 257, 567, 771, 1799, 2313, 2663, 5397, 6939, 7989, 16191, 18641, 20817, 23967, 48573, 55923, 71901, 145719, 167769, 215703, 503307, 684391, 1509921, 2053173, 4790737, 6159519, 14372211, 18478557, 43116633, 55435671, 129349899, 388049697]

約数ペア:

[(1, 388049697), (3, 129349899), (7, 55435671), (9, 43116633), (21, 18478557), (27, 14372211), (63, 6159519), (81, 4790737), (189, 2053173), (257, 1509921), (567, 684391), (771, 503307), (1799, 215703), (2313, 167769), (2663, 145719), (5397, 71901), (6939, 55923), (7989, 48573), (16191, 23967), (18641, 20817)]