164021720

素因数分解:

$2^3\times 5^1\times {\mathrm{4100543}}^1$

素因数の和:4100554

約数の個数: 16

約数和(自身を含む): 369048960

約数和(自身を除く): 205027240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4100543, 8201086, 16402172, 20502715, 32804344, 41005430, 82010860, 164021720]

約数ペア:

[(1, 164021720), (2, 82010860), (4, 41005430), (5, 32804344), (8, 20502715), (10, 16402172), (20, 8201086), (40, 4100543)]