19680045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1549}}^1$

素因数の和:1586

約数の個数: 48

約数和(自身を含む): 39580800

約数和(自身を除く): 19900755

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 121, 165, 231, 363, 385, 605, 847, 1155, 1549, 1815, 2541, 4235, 4647, 7745, 10843, 12705, 17039, 23235, 32529, 51117, 54215, 85195, 119273, 162645, 187429, 255585, 357819, 562287, 596365, 937145, 1312003, 1789095, 2811435, 3936009, 6560015, 19680045]

約数ペア:

[(1, 19680045), (3, 6560015), (5, 3936009), (7, 2811435), (11, 1789095), (15, 1312003), (21, 937145), (33, 596365), (35, 562287), (55, 357819), (77, 255585), (105, 187429), (121, 162645), (165, 119273), (231, 85195), (363, 54215), (385, 51117), (605, 32529), (847, 23235), (1155, 17039), (1549, 12705), (1815, 10843), (2541, 7745), (4235, 4647)]