20252840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5689}}^1$

素因数の和:5789

約数の個数: 32

約数和(自身を含む): 46089000

約数和(自身を除く): 25836160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5689, 11378, 22756, 28445, 45512, 56890, 113780, 227560, 506321, 1012642, 2025284, 2531605, 4050568, 5063210, 10126420, 20252840]

約数ペア:

[(1, 20252840), (2, 10126420), (4, 5063210), (5, 4050568), (8, 2531605), (10, 2025284), (20, 1012642), (40, 506321), (89, 227560), (178, 113780), (356, 56890), (445, 45512), (712, 28445), (890, 22756), (1780, 11378), (3560, 5689)]