21678956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5711}}^1$

素因数の和:5801

約数の個数: 24

約数和(自身を含む): 41423424

約数和(自身を除く): 19744468

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5711, 11422, 22844, 74243, 148486, 296972, 416903, 833806, 1667612, 5419739, 10839478, 21678956]

約数ペア:

[(1, 21678956), (2, 10839478), (4, 5419739), (13, 1667612), (26, 833806), (52, 416903), (73, 296972), (146, 148486), (292, 74243), (949, 22844), (1898, 11422), (3796, 5711)]