1287420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 3696000

約数和(自身を除く): 2408580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 499, 516, 645, 860, 998, 1290, 1497, 1996, 2495, 2580, 2994, 4990, 5988, 7485, 9980, 14970, 21457, 29940, 42914, 64371, 85828, 107285, 128742, 214570, 257484, 321855, 429140, 643710, 1287420]

約数ペア:

[(1, 1287420), (2, 643710), (3, 429140), (4, 321855), (5, 257484), (6, 214570), (10, 128742), (12, 107285), (15, 85828), (20, 64371), (30, 42914), (43, 29940), (60, 21457), (86, 14970), (129, 9980), (172, 7485), (215, 5988), (258, 4990), (430, 2994), (499, 2580), (516, 2495), (645, 1996), (860, 1497), (998, 1290)]