21304426

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{457}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 37856448

約数和(自身を除く): 16552022

約数列:

[1, 2, 11, 13, 22, 26, 143, 163, 286, 326, 457, 914, 1793, 2119, 3586, 4238, 5027, 5941, 10054, 11882, 23309, 46618, 65351, 74491, 130702, 148982, 819401, 968383, 1638802, 1936766, 10652213, 21304426]

約数ペア:

[(1, 21304426), (2, 10652213), (11, 1936766), (13, 1638802), (22, 968383), (26, 819401), (143, 148982), (163, 130702), (286, 74491), (326, 65351), (457, 46618), (914, 23309), (1793, 11882), (2119, 10054), (3586, 5941), (4238, 5027)]