21978748

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{6323}}^1$

素因数の和:6417

約数の個数: 24

約数和(自身を含む): 42497280

約数和(自身を除く): 20518532

約数列:

[1, 2, 4, 11, 22, 44, 79, 158, 316, 869, 1738, 3476, 6323, 12646, 25292, 69553, 139106, 278212, 499517, 999034, 1998068, 5494687, 10989374, 21978748]

約数ペア:

[(1, 21978748), (2, 10989374), (4, 5494687), (11, 1998068), (22, 999034), (44, 499517), (79, 278212), (158, 139106), (316, 69553), (869, 25292), (1738, 12646), (3476, 6323)]