21784784

素因数分解:

$2^4\times 7^1\times {\mathrm{194507}}^1$

素因数の和:194522

約数の個数: 20

約数和(自身を含む): 48237984

約数和(自身を除く): 26453200

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194507, 389014, 778028, 1361549, 1556056, 2723098, 3112112, 5446196, 10892392, 21784784]

約数ペア:

[(1, 21784784), (2, 10892392), (4, 5446196), (7, 3112112), (8, 2723098), (14, 1556056), (16, 1361549), (28, 778028), (56, 389014), (112, 194507)]