20487560

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{3067}}^1$

素因数の和:3245

約数の個数: 32

約数和(自身を含む): 46388160

約数和(自身を除く): 25900600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3067, 3340, 6134, 6680, 12268, 15335, 24536, 30670, 61340, 122680, 512189, 1024378, 2048756, 2560945, 4097512, 5121890, 10243780, 20487560]

約数ペア:

[(1, 20487560), (2, 10243780), (4, 5121890), (5, 4097512), (8, 2560945), (10, 2048756), (20, 1024378), (40, 512189), (167, 122680), (334, 61340), (668, 30670), (835, 24536), (1336, 15335), (1670, 12268), (3067, 6680), (3340, 6134)]