2161820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5689}}^1$

素因数の和:5717

約数の個数: 24

約数和(自身を含む): 4779600

約数和(自身を除く): 2617780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 5689, 11378, 22756, 28445, 56890, 108091, 113780, 216182, 432364, 540455, 1080910, 2161820]

約数ペア:

[(1, 2161820), (2, 1080910), (4, 540455), (5, 432364), (10, 216182), (19, 113780), (20, 108091), (38, 56890), (76, 28445), (95, 22756), (190, 11378), (380, 5689)]