21125860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21557}}^1$

素因数の和:21580

約数の個数: 36

約数和(自身を含む): 51609852

約数和(自身を除く): 30483992

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21557, 43114, 86228, 107785, 150899, 215570, 301798, 431140, 603596, 754495, 1056293, 1508990, 2112586, 3017980, 4225172, 5281465, 10562930, 21125860]

約数ペア:

[(1, 21125860), (2, 10562930), (4, 5281465), (5, 4225172), (7, 3017980), (10, 2112586), (14, 1508990), (20, 1056293), (28, 754495), (35, 603596), (49, 431140), (70, 301798), (98, 215570), (140, 150899), (196, 107785), (245, 86228), (490, 43114), (980, 21557)]