208380015

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{28409}}^1$

素因数の和:28583

約数の個数: 24

約数和(自身を含む): 363420720

約数和(自身を除く): 155040705

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 7335, 28409, 85227, 142045, 255681, 426135, 1278405, 4630667, 13892001, 23153335, 41676003, 69460005, 208380015]

約数ペア:

[(1, 208380015), (3, 69460005), (5, 41676003), (9, 23153335), (15, 13892001), (45, 4630667), (163, 1278405), (489, 426135), (815, 255681), (1467, 142045), (2445, 85227), (7335, 28409)]