21044840

素因数分解:

$2^3\times 5^1\times {\mathrm{526121}}^1$

素因数の和:526132

約数の個数: 16

約数和(自身を含む): 47350980

約数和(自身を除く): 26306140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526121, 1052242, 2104484, 2630605, 4208968, 5261210, 10522420, 21044840]

約数ペア:

[(1, 21044840), (2, 10522420), (4, 5261210), (5, 4208968), (8, 2630605), (10, 2104484), (20, 1052242), (40, 526121)]