21080378

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{7919}}^1$

素因数の和:7954

約数の個数: 16

約数和(自身を含む): 34784640

約数和(自身を除く): 13704262

約数列:

[1, 2, 11, 22, 121, 242, 1331, 2662, 7919, 15838, 87109, 174218, 958199, 1916398, 10540189, 21080378]

約数ペア:

[(1, 21080378), (2, 10540189), (11, 1916398), (22, 958199), (121, 174218), (242, 87109), (1331, 15838), (2662, 7919)]