21047150

素因数分解:

$2^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{827}}^1$

素因数の和:1348

約数の個数: 24

約数和(自身を含む): 39272040

約数和(自身を除く): 18224890

約数列:

[1, 2, 5, 10, 25, 50, 509, 827, 1018, 1654, 2545, 4135, 5090, 8270, 12725, 20675, 25450, 41350, 420943, 841886, 2104715, 4209430, 10523575, 21047150]

約数ペア:

[(1, 21047150), (2, 10523575), (5, 4209430), (10, 2104715), (25, 841886), (50, 420943), (509, 41350), (827, 25450), (1018, 20675), (1654, 12725), (2545, 8270), (4135, 5090)]