1728778821

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{20731}}^1$

素因数の和:20790

約数の個数: 48

約数和(自身を含む): 3033174528

約数和(自身を除く): 1304395707

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 361, 399, 627, 1083, 1463, 2527, 3971, 4389, 7581, 11913, 20731, 27797, 62193, 83391, 145117, 228041, 393889, 435351, 684123, 1181667, 1596287, 2757223, 4332779, 4788861, 7483891, 8271669, 12998337, 22451673, 30329453, 52387237, 82322801, 90988359, 157161711, 246968403, 576259607, 1728778821]

約数ペア:

[(1, 1728778821), (3, 576259607), (7, 246968403), (11, 157161711), (19, 90988359), (21, 82322801), (33, 52387237), (57, 30329453), (77, 22451673), (133, 12998337), (209, 8271669), (231, 7483891), (361, 4788861), (399, 4332779), (627, 2757223), (1083, 1596287), (1463, 1181667), (2527, 684123), (3971, 435351), (4389, 393889), (7581, 228041), (11913, 145117), (20731, 83391), (27797, 62193)]