28571720

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{3701}}^1$

素因数の和:3905

約数の個数: 32

約数和(自身を含む): 64636920

約数和(自身を除く): 36065200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3701, 3860, 7402, 7720, 14804, 18505, 29608, 37010, 74020, 148040, 714293, 1428586, 2857172, 3571465, 5714344, 7142930, 14285860, 28571720]

約数ペア:

[(1, 28571720), (2, 14285860), (4, 7142930), (5, 5714344), (8, 3571465), (10, 2857172), (20, 1428586), (40, 714293), (193, 148040), (386, 74020), (772, 37010), (965, 29608), (1544, 18505), (1930, 14804), (3701, 7720), (3860, 7402)]