19720638

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 52941600

約数和(自身を除く): 33220962

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 29, 42, 49, 54, 58, 63, 87, 98, 126, 147, 174, 189, 203, 257, 261, 294, 378, 406, 441, 514, 522, 609, 771, 783, 882, 1218, 1323, 1421, 1542, 1566, 1799, 1827, 2313, 2646, 2842, 3598, 3654, 4263, 4626, 5397, 5481, 6939, 7453, 8526, 10794, 10962, 12593, 12789, 13878, 14906, 16191, 22359, 25186, 25578, 32382, 37779, 38367, 44718, 48573, 52171, 67077, 75558, 76734, 97146, 104342, 113337, 134154, 156513, 201231, 226674, 313026, 340011, 365197, 402462, 469539, 680022, 730394, 939078, 1095591, 1408617, 2191182, 2817234, 3286773, 6573546, 9860319, 19720638]

約数ペア:

[(1, 19720638), (2, 9860319), (3, 6573546), (6, 3286773), (7, 2817234), (9, 2191182), (14, 1408617), (18, 1095591), (21, 939078), (27, 730394), (29, 680022), (42, 469539), (49, 402462), (54, 365197), (58, 340011), (63, 313026), (87, 226674), (98, 201231), (126, 156513), (147, 134154), (174, 113337), (189, 104342), (203, 97146), (257, 76734), (261, 75558), (294, 67077), (378, 52171), (406, 48573), (441, 44718), (514, 38367), (522, 37779), (609, 32382), (771, 25578), (783, 25186), (882, 22359), (1218, 16191), (1323, 14906), (1421, 13878), (1542, 12789), (1566, 12593), (1799, 10962), (1827, 10794), (2313, 8526), (2646, 7453), (2842, 6939), (3598, 5481), (3654, 5397), (4263, 4626)]