21352555

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 30729600

約数和(自身を除く): 9377045

約数列:

[1, 5, 7, 29, 35, 109, 145, 193, 203, 545, 763, 965, 1015, 1351, 3161, 3815, 5597, 6755, 15805, 21037, 22127, 27985, 39179, 105185, 110635, 147259, 195895, 610073, 736295, 3050365, 4270511, 21352555]

約数ペア:

[(1, 21352555), (5, 4270511), (7, 3050365), (29, 736295), (35, 610073), (109, 195895), (145, 147259), (193, 110635), (203, 105185), (545, 39179), (763, 27985), (965, 22127), (1015, 21037), (1351, 15805), (3161, 6755), (3815, 5597)]