20454760

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1901}}^1$

素因数の和:2181

約数の個数: 32

約数和(自身を含む): 46218600

約数和(自身を除く): 25763840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1901, 2152, 2690, 3802, 5380, 7604, 9505, 10760, 15208, 19010, 38020, 76040, 511369, 1022738, 2045476, 2556845, 4090952, 5113690, 10227380, 20454760]

約数ペア:

[(1, 20454760), (2, 10227380), (4, 5113690), (5, 4090952), (8, 2556845), (10, 2045476), (20, 1022738), (40, 511369), (269, 76040), (538, 38020), (1076, 19010), (1345, 15208), (1901, 10760), (2152, 9505), (2690, 7604), (3802, 5380)]