20208440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72173}}^1$

素因数の和:72191

約数の個数: 32

約数和(自身を含む): 51965280

約数和(自身を除く): 31756840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72173, 144346, 288692, 360865, 505211, 577384, 721730, 1010422, 1443460, 2020844, 2526055, 2886920, 4041688, 5052110, 10104220, 20208440]

約数ペア:

[(1, 20208440), (2, 10104220), (4, 5052110), (5, 4041688), (7, 2886920), (8, 2526055), (10, 2020844), (14, 1443460), (20, 1010422), (28, 721730), (35, 577384), (40, 505211), (56, 360865), (70, 288692), (140, 144346), (280, 72173)]