21918393

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{9403}}^1$

素因数の和:9453

約数の個数: 24

約数和(自身を含む): 37164608

約数和(自身を除く): 15246215

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 9403, 28209, 65821, 84627, 197463, 347911, 592389, 1043733, 2435377, 3131199, 7306131, 21918393]

約数ペア:

[(1, 21918393), (3, 7306131), (7, 3131199), (9, 2435377), (21, 1043733), (37, 592389), (63, 347911), (111, 197463), (259, 84627), (333, 65821), (777, 28209), (2331, 9403)]