21091785

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9833}}^1$

素因数の和:9865

約数の個数: 32

約数和(自身を含む): 39650688

約数和(自身を除く): 18558903

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 9833, 29499, 49165, 108163, 127829, 147495, 324489, 383487, 540815, 639145, 1406119, 1622445, 1917435, 4218357, 7030595, 21091785]

約数ペア:

[(1, 21091785), (3, 7030595), (5, 4218357), (11, 1917435), (13, 1622445), (15, 1406119), (33, 639145), (39, 540815), (55, 383487), (65, 324489), (143, 147495), (165, 127829), (195, 108163), (429, 49165), (715, 29499), (2145, 9833)]