2019780920

素因数分解:

$2^3\times 5^1\times {\mathrm{2843}}^1\times {\mathrm{17761}}^1$

素因数の和:20615

約数の個数: 32

約数和(自身を含む): 4546361520

約数和(自身を除く): 2526580600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2843, 5686, 11372, 14215, 17761, 22744, 28430, 35522, 56860, 71044, 88805, 113720, 142088, 177610, 355220, 710440, 50494523, 100989046, 201978092, 252472615, 403956184, 504945230, 1009890460, 2019780920]

約数ペア:

[(1, 2019780920), (2, 1009890460), (4, 504945230), (5, 403956184), (8, 252472615), (10, 201978092), (20, 100989046), (40, 50494523), (2843, 710440), (5686, 355220), (11372, 177610), (14215, 142088), (17761, 113720), (22744, 88805), (28430, 71044), (35522, 56860)]