1384840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 3159000

約数和(自身を除く): 1774160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 389, 445, 712, 778, 890, 1556, 1780, 1945, 3112, 3560, 3890, 7780, 15560, 34621, 69242, 138484, 173105, 276968, 346210, 692420, 1384840]

約数ペア:

[(1, 1384840), (2, 692420), (4, 346210), (5, 276968), (8, 173105), (10, 138484), (20, 69242), (40, 34621), (89, 15560), (178, 7780), (356, 3890), (389, 3560), (445, 3112), (712, 1945), (778, 1780), (890, 1556)]