28663340

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{16103}}^1$

素因数の和:16201

約数の個数: 24

約数和(自身を含む): 60873120

約数和(自身を除く): 32209780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 16103, 32206, 64412, 80515, 161030, 322060, 1433167, 2866334, 5732668, 7165835, 14331670, 28663340]

約数ペア:

[(1, 28663340), (2, 14331670), (4, 7165835), (5, 5732668), (10, 2866334), (20, 1433167), (89, 322060), (178, 161030), (356, 80515), (445, 64412), (890, 32206), (1780, 16103)]