21613309.000000000

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{1729141}}^1$

素因数の和:1729155

約数の個数: 24

約数和(自身を含む): 387327808

約数和(自身を除く): 242079964

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 1729141, 3458282, 5187423, 6916564, 10374846, 12103987, 20749692, 24207974, 36311961, 48415948, 72623922, 145247844]

約数ペア:

[(1, 145247844), (2, 72623922), (3, 48415948), (4, 36311961), (6, 24207974), (7, 20749692), (12, 12103987), (14, 10374846), (21, 6916564), (28, 5187423), (42, 3458282), (84, 1729141)]