213581228

素因数分解:

$2^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{19609}}^1$

素因数の和:20009

約数の個数: 24

約数和(自身を含む): 428282400

約数和(自身を除く): 214701172

約数列:

[1, 2, 4, 7, 14, 28, 389, 778, 1556, 2723, 5446, 10892, 19609, 39218, 78436, 137263, 274526, 549052, 7627901, 15255802, 30511604, 53395307, 106790614, 213581228]

約数ペア:

[(1, 213581228), (2, 106790614), (4, 53395307), (7, 30511604), (14, 15255802), (28, 7627901), (389, 549052), (778, 274526), (1556, 137263), (2723, 78436), (5446, 39218), (10892, 19609)]