205122816020

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{20149589}}^1$

素因数の和:20150107

約数の個数: 24

約数和(自身を含む): 431604217800

約数和(自身を除く): 226481401780

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 20149589, 40299178, 80598356, 100747945, 201495890, 402991780, 10256140801, 20512281602, 41024563204, 51280704005, 102561408010, 205122816020]

約数ペア:

[(1, 205122816020), (2, 102561408010), (4, 51280704005), (5, 41024563204), (10, 20512281602), (20, 10256140801), (509, 402991780), (1018, 201495890), (2036, 100747945), (2545, 80598356), (5090, 40299178), (10180, 20149589)]