19648475

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 31069440

約数和(自身を除く): 11420965

約数列:

[1, 5, 7, 11, 25, 35, 55, 59, 77, 173, 175, 275, 295, 385, 413, 649, 865, 1211, 1475, 1903, 1925, 2065, 3245, 4325, 4543, 6055, 9515, 10207, 10325, 13321, 16225, 22715, 30275, 47575, 51035, 66605, 71449, 112277, 113575, 255175, 333025, 357245, 561385, 785939, 1786225, 2806925, 3929695, 19648475]

約数ペア:

[(1, 19648475), (5, 3929695), (7, 2806925), (11, 1786225), (25, 785939), (35, 561385), (55, 357245), (59, 333025), (77, 255175), (173, 113575), (175, 112277), (275, 71449), (295, 66605), (385, 51035), (413, 47575), (649, 30275), (865, 22715), (1211, 16225), (1475, 13321), (1903, 10325), (1925, 10207), (2065, 9515), (3245, 6055), (4325, 4543)]