20988213

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{8221}}^1$

素因数の和:8284

約数の個数: 16

約数和(自身を含む): 29993856

約数和(自身を除く): 9005643

約数列:

[1, 3, 23, 37, 69, 111, 851, 2553, 8221, 24663, 189083, 304177, 567249, 912531, 6996071, 20988213]

約数ペア:

[(1, 20988213), (3, 6996071), (23, 912531), (37, 567249), (69, 304177), (111, 189083), (851, 24663), (2553, 8221)]