20791476

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{641}}^1$

素因数の和:721

約数の個数: 72

約数和(自身を含む): 56786184

約数和(自身を除く): 35994708

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 53, 68, 102, 106, 153, 159, 204, 212, 306, 318, 477, 612, 636, 641, 901, 954, 1282, 1802, 1908, 1923, 2564, 2703, 3604, 3846, 5406, 5769, 7692, 8109, 10812, 10897, 11538, 16218, 21794, 23076, 32436, 32691, 33973, 43588, 65382, 67946, 98073, 101919, 130764, 135892, 196146, 203838, 305757, 392292, 407676, 577541, 611514, 1155082, 1223028, 1732623, 2310164, 3465246, 5197869, 6930492, 10395738, 20791476]

約数ペア:

[(1, 20791476), (2, 10395738), (3, 6930492), (4, 5197869), (6, 3465246), (9, 2310164), (12, 1732623), (17, 1223028), (18, 1155082), (34, 611514), (36, 577541), (51, 407676), (53, 392292), (68, 305757), (102, 203838), (106, 196146), (153, 135892), (159, 130764), (204, 101919), (212, 98073), (306, 67946), (318, 65382), (477, 43588), (612, 33973), (636, 32691), (641, 32436), (901, 23076), (954, 21794), (1282, 16218), (1802, 11538), (1908, 10897), (1923, 10812), (2564, 8109), (2703, 7692), (3604, 5769), (3846, 5406)]