19228840

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{743}}^1$

素因数の和:1401

約数の個数: 32

約数和(自身を含む): 43390080

約数和(自身を除く): 24161240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 743, 1294, 1486, 2588, 2972, 3235, 3715, 5176, 5944, 6470, 7430, 12940, 14860, 25880, 29720, 480721, 961442, 1922884, 2403605, 3845768, 4807210, 9614420, 19228840]

約数ペア:

[(1, 19228840), (2, 9614420), (4, 4807210), (5, 3845768), (8, 2403605), (10, 1922884), (20, 961442), (40, 480721), (647, 29720), (743, 25880), (1294, 14860), (1486, 12940), (2588, 7430), (2972, 6470), (3235, 5944), (3715, 5176)]