18889880

素因数分解:

$2^3\times 5^1\times {\mathrm{472247}}^1$

素因数の和:472258

約数の個数: 16

約数和(自身を含む): 42502320

約数和(自身を除く): 23612440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472247, 944494, 1888988, 2361235, 3777976, 4722470, 9444940, 18889880]

約数ペア:

[(1, 18889880), (2, 9444940), (4, 4722470), (5, 3777976), (8, 2361235), (10, 1888988), (20, 944494), (40, 472247)]