20552500

素因数分解:

$2^2\times 5^4\times {\mathrm{8221}}^1$

素因数の和:8245

約数の個数: 30

約数和(自身を含む): 44949674

約数和(自身を除く): 24397174

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8221, 16442, 32884, 41105, 82210, 164420, 205525, 411050, 822100, 1027625, 2055250, 4110500, 5138125, 10276250, 20552500]

約数ペア:

[(1, 20552500), (2, 10276250), (4, 5138125), (5, 4110500), (10, 2055250), (20, 1027625), (25, 822100), (50, 411050), (100, 205525), (125, 164420), (250, 82210), (500, 41105), (625, 32884), (1250, 16442), (2500, 8221)]