21687860

素因数分解:

$2^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{3701}}^1$

素因数の和:4003

約数の個数: 24

約数和(自身を含む): 45712296

約数和(自身を除く): 24024436

約数列:

[1, 2, 4, 5, 10, 20, 293, 586, 1172, 1465, 2930, 3701, 5860, 7402, 14804, 18505, 37010, 74020, 1084393, 2168786, 4337572, 5421965, 10843930, 21687860]

約数ペア:

[(1, 21687860), (2, 10843930), (4, 5421965), (5, 4337572), (10, 2168786), (20, 1084393), (293, 74020), (586, 37010), (1172, 18505), (1465, 14804), (2930, 7402), (3701, 5860)]