19811015

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^3$

素因数の和:124

約数の個数: 32

約数和(自身を含む): 29552640

約数和(自身を除く): 9741625

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 961, 1085, 2945, 4123, 4805, 6727, 18259, 20615, 29791, 33635, 91295, 127813, 148955, 208537, 566029, 639065, 1042685, 2830145, 3962203, 19811015]

約数ペア:

[(1, 19811015), (5, 3962203), (7, 2830145), (19, 1042685), (31, 639065), (35, 566029), (95, 208537), (133, 148955), (155, 127813), (217, 91295), (589, 33635), (665, 29791), (961, 20615), (1085, 18259), (2945, 6727), (4123, 4805)]