20388850

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 39693888

約数和(自身を除く): 19305038

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 103, 107, 185, 206, 214, 370, 515, 535, 925, 1030, 1070, 1850, 2575, 2675, 3811, 3959, 5150, 5350, 7622, 7918, 11021, 19055, 19795, 22042, 38110, 39590, 55105, 95275, 98975, 110210, 190550, 197950, 275525, 407777, 551050, 815554, 2038885, 4077770, 10194425, 20388850]

約数ペア:

[(1, 20388850), (2, 10194425), (5, 4077770), (10, 2038885), (25, 815554), (37, 551050), (50, 407777), (74, 275525), (103, 197950), (107, 190550), (185, 110210), (206, 98975), (214, 95275), (370, 55105), (515, 39590), (535, 38110), (925, 22042), (1030, 19795), (1070, 19055), (1850, 11021), (2575, 7918), (2675, 7622), (3811, 5350), (3959, 5150)]