28355440

素因数分解:

$2^4\times 5^1\times {\mathrm{354443}}^1$

素因数の和:354456

約数の個数: 20

約数和(自身を含む): 65926584

約数和(自身を除く): 37571144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354443, 708886, 1417772, 1772215, 2835544, 3544430, 5671088, 7088860, 14177720, 28355440]

約数ペア:

[(1, 28355440), (2, 14177720), (4, 7088860), (5, 5671088), (8, 3544430), (10, 2835544), (16, 1772215), (20, 1417772), (40, 708886), (80, 354443)]