21000307070

素因数分解:

$2^1\times 5^1\times {\mathrm{2143}}^1\times {\mathrm{979949}}^1$

素因数の和:982099

約数の個数: 16

約数和(自身を含む): 37818230400

約数和(自身を除く): 16817923330

約数列:

[1, 2, 5, 10, 2143, 4286, 10715, 21430, 979949, 1959898, 4899745, 9799490, 2100030707, 4200061414, 10500153535, 21000307070]

約数ペア:

[(1, 21000307070), (2, 10500153535), (5, 4200061414), (10, 2100030707), (2143, 9799490), (4286, 4899745), (10715, 1959898), (21430, 979949)]