257989340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1842781}}^1$

素因数の和:1842797

約数の個数: 24

約数和(自身を含む): 619174752

約数和(自身を除く): 361185412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1842781, 3685562, 7371124, 9213905, 12899467, 18427810, 25798934, 36855620, 51597868, 64497335, 128994670, 257989340]

約数ペア:

[(1, 257989340), (2, 128994670), (4, 64497335), (5, 51597868), (7, 36855620), (10, 25798934), (14, 18427810), (20, 12899467), (28, 9213905), (35, 7371124), (70, 3685562), (140, 1842781)]