15428420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{571}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 37285248

約数和(自身を除く): 21856828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 386, 571, 772, 965, 1142, 1351, 1930, 2284, 2702, 2855, 3860, 3997, 5404, 5710, 6755, 7994, 11420, 13510, 15988, 19985, 27020, 39970, 79940, 110203, 220406, 440812, 551015, 771421, 1102030, 1542842, 2204060, 3085684, 3857105, 7714210, 15428420]

約数ペア:

[(1, 15428420), (2, 7714210), (4, 3857105), (5, 3085684), (7, 2204060), (10, 1542842), (14, 1102030), (20, 771421), (28, 551015), (35, 440812), (70, 220406), (140, 110203), (193, 79940), (386, 39970), (571, 27020), (772, 19985), (965, 15988), (1142, 13510), (1351, 11420), (1930, 7994), (2284, 6755), (2702, 5710), (2855, 5404), (3860, 3997)]