21427270

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{31981}}^1$

素因数の和:32055

約数の個数: 16

約数和(自身を含む): 39145968

約数和(自身を除く): 17718698

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 31981, 63962, 159905, 319810, 2142727, 4285454, 10713635, 21427270]

約数ペア:

[(1, 21427270), (2, 10713635), (5, 4285454), (10, 2142727), (67, 319810), (134, 159905), (335, 63962), (670, 31981)]