81603440

素因数分解:

$2^4\times 5^1\times {\mathrm{1020043}}^1$

素因数の和:1020056

約数の個数: 20

約数和(自身を含む): 189728184

約数和(自身を除く): 108124744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1020043, 2040086, 4080172, 5100215, 8160344, 10200430, 16320688, 20400860, 40801720, 81603440]

約数ペア:

[(1, 81603440), (2, 40801720), (4, 20400860), (5, 16320688), (8, 10200430), (10, 8160344), (16, 5100215), (20, 4080172), (40, 2040086), (80, 1020043)]