18937420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10639}}^1$

素因数の和:10737

約数の個数: 24

約数和(自身を含む): 40219200

約数和(自身を除く): 21281780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10639, 21278, 42556, 53195, 106390, 212780, 946871, 1893742, 3787484, 4734355, 9468710, 18937420]

約数ペア:

[(1, 18937420), (2, 9468710), (4, 4734355), (5, 3787484), (10, 1893742), (20, 946871), (89, 212780), (178, 106390), (356, 53195), (445, 42556), (890, 21278), (1780, 10639)]