20651378

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{40813}}^1$

素因数の和:40849

約数の個数: 16

約数和(自身を含む): 35263296

約数和(自身を除く): 14611918

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 40813, 81626, 448943, 897886, 938699, 1877398, 10325689, 20651378]

約数ペア:

[(1, 20651378), (2, 10325689), (11, 1877398), (22, 938699), (23, 897886), (46, 448943), (253, 81626), (506, 40813)]