19728990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{7559}}^1$

素因数の和:7601

約数の個数: 48

約数和(自身を含む): 53071200

約数和(自身を除く): 33342210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 58, 87, 90, 145, 174, 261, 290, 435, 522, 870, 1305, 2610, 7559, 15118, 22677, 37795, 45354, 68031, 75590, 113385, 136062, 219211, 226770, 340155, 438422, 657633, 680310, 1096055, 1315266, 1972899, 2192110, 3288165, 3945798, 6576330, 9864495, 19728990]

約数ペア:

[(1, 19728990), (2, 9864495), (3, 6576330), (5, 3945798), (6, 3288165), (9, 2192110), (10, 1972899), (15, 1315266), (18, 1096055), (29, 680310), (30, 657633), (45, 438422), (58, 340155), (87, 226770), (90, 219211), (145, 136062), (174, 113385), (261, 75590), (290, 68031), (435, 45354), (522, 37795), (870, 22677), (1305, 15118), (2610, 7559)]