20581264

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{347}}^1$

素因数の和:703

約数の個数: 40

約数和(自身を含む): 43756128

約数和(自身を除く): 23174864

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 337, 347, 674, 694, 1348, 1388, 2696, 2776, 3707, 3817, 5392, 5552, 7414, 7634, 14828, 15268, 29656, 30536, 59312, 61072, 116939, 233878, 467756, 935512, 1286329, 1871024, 2572658, 5145316, 10290632, 20581264]

約数ペア:

[(1, 20581264), (2, 10290632), (4, 5145316), (8, 2572658), (11, 1871024), (16, 1286329), (22, 935512), (44, 467756), (88, 233878), (176, 116939), (337, 61072), (347, 59312), (674, 30536), (694, 29656), (1348, 15268), (1388, 14828), (2696, 7634), (2776, 7414), (3707, 5552), (3817, 5392)]