20285895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4493}}^1$

素因数の和:4551

約数の個数: 32

約数和(自身を含む): 37965312

約数和(自身を除く): 17679417

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4493, 4515, 13479, 22465, 31451, 67395, 94353, 157255, 193199, 471765, 579597, 965995, 1352393, 2897985, 4057179, 6761965, 20285895]

約数ペア:

[(1, 20285895), (3, 6761965), (5, 4057179), (7, 2897985), (15, 1352393), (21, 965995), (35, 579597), (43, 471765), (105, 193199), (129, 157255), (215, 94353), (301, 67395), (645, 31451), (903, 22465), (1505, 13479), (4493, 4515)]