21079245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2971}}^1$

素因数の和:3033

約数の個数: 32

約数和(自身を含む): 37661184

約数和(自身を除く): 16581939

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 129, 165, 215, 473, 645, 1419, 2365, 2971, 7095, 8913, 14855, 32681, 44565, 98043, 127753, 163405, 383259, 490215, 638765, 1405283, 1916295, 4215849, 7026415, 21079245]

約数ペア:

[(1, 21079245), (3, 7026415), (5, 4215849), (11, 1916295), (15, 1405283), (33, 638765), (43, 490215), (55, 383259), (129, 163405), (165, 127753), (215, 98043), (473, 44565), (645, 32681), (1419, 14855), (2365, 8913), (2971, 7095)]