21427408

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10223}}^1$

素因数の和:10362

約数の個数: 20

約数和(自身を含む): 41836608

約数和(自身を除く): 20409200

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10223, 20446, 40892, 81784, 163568, 1339213, 2678426, 5356852, 10713704, 21427408]

約数ペア:

[(1, 21427408), (2, 10713704), (4, 5356852), (8, 2678426), (16, 1339213), (131, 163568), (262, 81784), (524, 40892), (1048, 20446), (2096, 10223)]