21167864

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{4003}}^1$

素因数の和:4670

約数の個数: 16

約数和(自身を含む): 39759720

約数和(自身を除く): 18591856

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 4003, 5288, 8006, 16012, 32024, 2645983, 5291966, 10583932, 21167864]

約数ペア:

[(1, 21167864), (2, 10583932), (4, 5291966), (8, 2645983), (661, 32024), (1322, 16012), (2644, 8006), (4003, 5288)]