20306965

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 28993536

約数和(自身を除く): 8686571

約数列:

[1, 5, 7, 35, 43, 103, 131, 215, 301, 515, 655, 721, 917, 1505, 3605, 4429, 4585, 5633, 13493, 22145, 28165, 31003, 39431, 67465, 94451, 155015, 197155, 472255, 580199, 2900995, 4061393, 20306965]

約数ペア:

[(1, 20306965), (5, 4061393), (7, 2900995), (35, 580199), (43, 472255), (103, 197155), (131, 155015), (215, 94451), (301, 67465), (515, 39431), (655, 31003), (721, 28165), (917, 22145), (1505, 13493), (3605, 5633), (4429, 4585)]