19820325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1987}}^1$

素因数の和:2026

約数の個数: 48

約数和(自身を含む): 39441920

約数和(自身を除く): 19621595

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1987, 1995, 3325, 5961, 9935, 9975, 13909, 29805, 37753, 41727, 49675, 69545, 113259, 149025, 188765, 208635, 264271, 347725, 566295, 792813, 943825, 1043175, 1321355, 2831475, 3964065, 6606775, 19820325]

約数ペア:

[(1, 19820325), (3, 6606775), (5, 3964065), (7, 2831475), (15, 1321355), (19, 1043175), (21, 943825), (25, 792813), (35, 566295), (57, 347725), (75, 264271), (95, 208635), (105, 188765), (133, 149025), (175, 113259), (285, 69545), (399, 49675), (475, 41727), (525, 37753), (665, 29805), (1425, 13909), (1987, 9975), (1995, 9935), (3325, 5961)]