209510140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{2999}}^1$

素因数の和:3514

約数の個数: 48

約数和(自身を含む): 504000000

約数和(自身を除く): 294489860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 499, 998, 1996, 2495, 2999, 3493, 4990, 5998, 6986, 9980, 11996, 13972, 14995, 17465, 20993, 29990, 34930, 41986, 59980, 69860, 83972, 104965, 209930, 419860, 1496501, 2993002, 5986004, 7482505, 10475507, 14965010, 20951014, 29930020, 41902028, 52377535, 104755070, 209510140]

約数ペア:

[(1, 209510140), (2, 104755070), (4, 52377535), (5, 41902028), (7, 29930020), (10, 20951014), (14, 14965010), (20, 10475507), (28, 7482505), (35, 5986004), (70, 2993002), (140, 1496501), (499, 419860), (998, 209930), (1996, 104965), (2495, 83972), (2999, 69860), (3493, 59980), (4990, 41986), (5998, 34930), (6986, 29990), (9980, 20993), (11996, 17465), (13972, 14995)]