21109627

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 7275653

約数列:

[1, 7, 11, 19, 47, 77, 133, 209, 307, 329, 517, 893, 1463, 2149, 3377, 3619, 5833, 6251, 9823, 14429, 23639, 40831, 64163, 68761, 101003, 158719, 274151, 449141, 1111033, 1919057, 3015661, 21109627]

約数ペア:

[(1, 21109627), (7, 3015661), (11, 1919057), (19, 1111033), (47, 449141), (77, 274151), (133, 158719), (209, 101003), (307, 68761), (329, 64163), (517, 40831), (893, 23639), (1463, 14429), (2149, 9823), (3377, 6251), (3619, 5833)]