20531325

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16103}}^1$

素因数の和:16133

約数の個数: 24

約数和(自身を含む): 35944128

約数和(自身を除く): 15412803

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16103, 48309, 80515, 241545, 273751, 402575, 821253, 1207725, 1368755, 4106265, 6843775, 20531325]

約数ペア:

[(1, 20531325), (3, 6843775), (5, 4106265), (15, 1368755), (17, 1207725), (25, 821253), (51, 402575), (75, 273751), (85, 241545), (255, 80515), (425, 48309), (1275, 16103)]