20750373

素因数分解:

$3^2\times 7^2\times {\mathrm{211}}^1\times {\mathrm{223}}^1$

素因数の和:454

約数の個数: 36

約数和(自身を含む): 35188608

約数和(自身を除く): 14438235

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 211, 223, 441, 633, 669, 1477, 1561, 1899, 2007, 4431, 4683, 10339, 10927, 13293, 14049, 31017, 32781, 47053, 93051, 98343, 141159, 329371, 423477, 988113, 2305597, 2964339, 6916791, 20750373]

約数ペア:

[(1, 20750373), (3, 6916791), (7, 2964339), (9, 2305597), (21, 988113), (49, 423477), (63, 329371), (147, 141159), (211, 98343), (223, 93051), (441, 47053), (633, 32781), (669, 31017), (1477, 14049), (1561, 13293), (1899, 10927), (2007, 10339), (4431, 4683)]