19621900

素因数分解:

$2^2\times 5^2\times {\mathrm{239}}^1\times {\mathrm{821}}^1$

素因数の和:1074

約数の個数: 36

約数和(自身を含む): 42809760

約数和(自身を除く): 23187860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 239, 478, 821, 956, 1195, 1642, 2390, 3284, 4105, 4780, 5975, 8210, 11950, 16420, 20525, 23900, 41050, 82100, 196219, 392438, 784876, 981095, 1962190, 3924380, 4905475, 9810950, 19621900]

約数ペア:

[(1, 19621900), (2, 9810950), (4, 4905475), (5, 3924380), (10, 1962190), (20, 981095), (25, 784876), (50, 392438), (100, 196219), (239, 82100), (478, 41050), (821, 23900), (956, 20525), (1195, 16420), (1642, 11950), (2390, 8210), (3284, 5975), (4105, 4780)]