19781460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109897}}^1$

素因数の和:109912

約数の個数: 36

約数和(自身を含む): 60004308

約数和(自身を除く): 40222848

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 109897, 219794, 329691, 439588, 549485, 659382, 989073, 1098970, 1318764, 1648455, 1978146, 2197940, 3296910, 3956292, 4945365, 6593820, 9890730, 19781460]

約数ペア:

[(1, 19781460), (2, 9890730), (3, 6593820), (4, 4945365), (5, 3956292), (6, 3296910), (9, 2197940), (10, 1978146), (12, 1648455), (15, 1318764), (18, 1098970), (20, 989073), (30, 659382), (36, 549485), (45, 439588), (60, 329691), (90, 219794), (180, 109897)]