55729720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32401}}^1$

素因数の和:32455

約数の個数: 32

約数和(自身を含む): 128311920

約数和(自身を除く): 72582200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 32401, 64802, 129604, 162005, 259208, 324010, 648020, 1296040, 1393243, 2786486, 5572972, 6966215, 11145944, 13932430, 27864860, 55729720]

約数ペア:

[(1, 55729720), (2, 27864860), (4, 13932430), (5, 11145944), (8, 6966215), (10, 5572972), (20, 2786486), (40, 1393243), (43, 1296040), (86, 648020), (172, 324010), (215, 259208), (344, 162005), (430, 129604), (860, 64802), (1720, 32401)]