21805780

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{6091}}^1$

素因数の和:6279

約数の個数: 24

約数和(自身を含む): 46055520

約数和(自身を除く): 24249740

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 6091, 12182, 24364, 30455, 60910, 121820, 1090289, 2180578, 4361156, 5451445, 10902890, 21805780]

約数ペア:

[(1, 21805780), (2, 10902890), (4, 5451445), (5, 4361156), (10, 2180578), (20, 1090289), (179, 121820), (358, 60910), (716, 30455), (895, 24364), (1790, 12182), (3580, 6091)]