21000886280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47729287}}^1$

素因数の和:47729309

約数の個数: 32

約数和(自身を含む): 51547631040

約数和(自身を除く): 30546744760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47729287, 95458574, 190917148, 238646435, 381834296, 477292870, 525022157, 954585740, 1050044314, 1909171480, 2100088628, 2625110785, 4200177256, 5250221570, 10500443140, 21000886280]

約数ペア:

[(1, 21000886280), (2, 10500443140), (4, 5250221570), (5, 4200177256), (8, 2625110785), (10, 2100088628), (11, 1909171480), (20, 1050044314), (22, 954585740), (40, 525022157), (44, 477292870), (55, 381834296), (88, 238646435), (110, 190917148), (220, 95458574), (440, 47729287)]