1215740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{683}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 2585520

約数和(自身を除く): 1369780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 683, 890, 1366, 1780, 2732, 3415, 6830, 13660, 60787, 121574, 243148, 303935, 607870, 1215740]

約数ペア:

[(1, 1215740), (2, 607870), (4, 303935), (5, 243148), (10, 121574), (20, 60787), (89, 13660), (178, 6830), (356, 3415), (445, 2732), (683, 1780), (890, 1366)]