15815120

素因数分解:

$2^4\times 5^1\times {\mathrm{197689}}^1$

素因数の和:197702

約数の個数: 20

約数和(自身を含む): 36770340

約数和(自身を除く): 20955220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197689, 395378, 790756, 988445, 1581512, 1976890, 3163024, 3953780, 7907560, 15815120]

約数ペア:

[(1, 15815120), (2, 7907560), (4, 3953780), (5, 3163024), (8, 1976890), (10, 1581512), (16, 988445), (20, 790756), (40, 395378), (80, 197689)]