21297140

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4691}}^1$

素因数の和:4927

約数の個数: 24

約数和(自身を含む): 44930592

約数和(自身を除く): 23633452

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 4691, 9382, 18764, 23455, 46910, 93820, 1064857, 2129714, 4259428, 5324285, 10648570, 21297140]

約数ペア:

[(1, 21297140), (2, 10648570), (4, 5324285), (5, 4259428), (10, 2129714), (20, 1064857), (227, 93820), (454, 46910), (908, 23455), (1135, 18764), (2270, 9382), (4540, 4691)]