21691664

素因数分解:

$2^4\times {\mathrm{347}}^1\times {\mathrm{3907}}^1$

素因数の和:4262

約数の個数: 20

約数和(自身を含む): 42159504

約数和(自身を除く): 20467840

約数列:

[1, 2, 4, 8, 16, 347, 694, 1388, 2776, 3907, 5552, 7814, 15628, 31256, 62512, 1355729, 2711458, 5422916, 10845832, 21691664]

約数ペア:

[(1, 21691664), (2, 10845832), (4, 5422916), (8, 2711458), (16, 1355729), (347, 62512), (694, 31256), (1388, 15628), (2776, 7814), (3907, 5552)]