21552860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153949}}^1$

素因数の和:153965

約数の個数: 24

約数和(自身を含む): 51727200

約数和(自身を除く): 30174340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153949, 307898, 615796, 769745, 1077643, 1539490, 2155286, 3078980, 4310572, 5388215, 10776430, 21552860]

約数ペア:

[(1, 21552860), (2, 10776430), (4, 5388215), (5, 4310572), (7, 3078980), (10, 2155286), (14, 1539490), (20, 1077643), (28, 769745), (35, 615796), (70, 307898), (140, 153949)]