20321385

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1879}}^1$

素因数の和:1997

約数の個数: 32

約数和(自身を含む): 37539840

約数和(自身を除く): 17218455

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 1879, 2163, 3605, 5637, 9395, 10815, 13153, 28185, 39459, 65765, 193537, 197295, 580611, 967685, 1354759, 2903055, 4064277, 6773795, 20321385]

約数ペア:

[(1, 20321385), (3, 6773795), (5, 4064277), (7, 2903055), (15, 1354759), (21, 967685), (35, 580611), (103, 197295), (105, 193537), (309, 65765), (515, 39459), (721, 28185), (1545, 13153), (1879, 10815), (2163, 9395), (3605, 5637)]