21142821

素因数分解:

$3^1\times 7^1\times {\mathrm{541}}^1\times {\mathrm{1861}}^1$

素因数の和:2412

約数の個数: 16

約数和(自身を含む): 32294528

約数和(自身を除く): 11151707

約数列:

[1, 3, 7, 21, 541, 1623, 1861, 3787, 5583, 11361, 13027, 39081, 1006801, 3020403, 7047607, 21142821]

約数ペア:

[(1, 21142821), (3, 7047607), (7, 3020403), (21, 1006801), (541, 39081), (1623, 13027), (1861, 11361), (3787, 5583)]