28100860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15787}}^1$

素因数の和:15885

約数の個数: 24

約数和(自身を含む): 59678640

約数和(自身を除く): 31577780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 15787, 31574, 63148, 78935, 157870, 315740, 1405043, 2810086, 5620172, 7025215, 14050430, 28100860]

約数ペア:

[(1, 28100860), (2, 14050430), (4, 7025215), (5, 5620172), (10, 2810086), (20, 1405043), (89, 315740), (178, 157870), (356, 78935), (445, 63148), (890, 31574), (1780, 15787)]