19542620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10979}}^1$

素因数の和:11077

約数の個数: 24

約数和(自身を含む): 41504400

約数和(自身を除く): 21961780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10979, 21958, 43916, 54895, 109790, 219580, 977131, 1954262, 3908524, 4885655, 9771310, 19542620]

約数ペア:

[(1, 19542620), (2, 9771310), (4, 4885655), (5, 3908524), (10, 1954262), (20, 977131), (89, 219580), (178, 109790), (356, 54895), (445, 43916), (890, 21958), (1780, 10979)]