21204135

素因数分解:

$3^2\times 5^1\times {\mathrm{467}}^1\times {\mathrm{1009}}^1$

素因数の和:1487

約数の個数: 24

約数和(自身を含む): 36869040

約数和(自身を除く): 15664905

約数列:

[1, 3, 5, 9, 15, 45, 467, 1009, 1401, 2335, 3027, 4203, 5045, 7005, 9081, 15135, 21015, 45405, 471203, 1413609, 2356015, 4240827, 7068045, 21204135]

約数ペア:

[(1, 21204135), (3, 7068045), (5, 4240827), (9, 2356015), (15, 1413609), (45, 471203), (467, 45405), (1009, 21015), (1401, 15135), (2335, 9081), (3027, 7005), (4203, 5045)]