21087870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1381}}^1$

素因数の和:1900

約数の個数: 32

約数和(自身を含む): 50747040

約数和(自身を除く): 29659170

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 509, 1018, 1381, 1527, 2545, 2762, 3054, 4143, 5090, 6905, 7635, 8286, 13810, 15270, 20715, 41430, 702929, 1405858, 2108787, 3514645, 4217574, 7029290, 10543935, 21087870]

約数ペア:

[(1, 21087870), (2, 10543935), (3, 7029290), (5, 4217574), (6, 3514645), (10, 2108787), (15, 1405858), (30, 702929), (509, 41430), (1018, 20715), (1381, 15270), (1527, 13810), (2545, 8286), (2762, 7635), (3054, 6905), (4143, 5090)]