19515856

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9311}}^1$

素因数の和:9450

約数の個数: 20

約数和(自身を含む): 38104704

約数和(自身を除く): 18588848

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9311, 18622, 37244, 74488, 148976, 1219741, 2439482, 4878964, 9757928, 19515856]

約数ペア:

[(1, 19515856), (2, 9757928), (4, 4878964), (8, 2439482), (16, 1219741), (131, 148976), (262, 74488), (524, 37244), (1048, 18622), (2096, 9311)]