21516670

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{307381}}^1$

素因数の和:307395

約数の個数: 16

約数和(自身を含む): 44263008

約数和(自身を除く): 22746338

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 307381, 614762, 1536905, 2151667, 3073810, 4303334, 10758335, 21516670]

約数ペア:

[(1, 21516670), (2, 10758335), (5, 4303334), (7, 3073810), (10, 2151667), (14, 1536905), (35, 614762), (70, 307381)]