19983560

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2791}}^1$

素因数の和:2981

約数の個数: 32

約数和(自身を含む): 45230400

約数和(自身を除く): 25246840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2791, 3580, 5582, 7160, 11164, 13955, 22328, 27910, 55820, 111640, 499589, 999178, 1998356, 2497945, 3996712, 4995890, 9991780, 19983560]

約数ペア:

[(1, 19983560), (2, 9991780), (4, 4995890), (5, 3996712), (8, 2497945), (10, 1998356), (20, 999178), (40, 499589), (179, 111640), (358, 55820), (716, 27910), (895, 22328), (1432, 13955), (1790, 11164), (2791, 7160), (3580, 5582)]