18479860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 45821160

約数和(自身を除く): 27341300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 173, 196, 218, 245, 346, 436, 490, 545, 692, 763, 865, 980, 1090, 1211, 1526, 1730, 2180, 2422, 3052, 3460, 3815, 4844, 5341, 6055, 7630, 8477, 10682, 12110, 15260, 16954, 18857, 21364, 24220, 26705, 33908, 37714, 42385, 53410, 75428, 84770, 94285, 106820, 131999, 169540, 188570, 263998, 377140, 527996, 659995, 923993, 1319990, 1847986, 2639980, 3695972, 4619965, 9239930, 18479860]

約数ペア:

[(1, 18479860), (2, 9239930), (4, 4619965), (5, 3695972), (7, 2639980), (10, 1847986), (14, 1319990), (20, 923993), (28, 659995), (35, 527996), (49, 377140), (70, 263998), (98, 188570), (109, 169540), (140, 131999), (173, 106820), (196, 94285), (218, 84770), (245, 75428), (346, 53410), (436, 42385), (490, 37714), (545, 33908), (692, 26705), (763, 24220), (865, 21364), (980, 18857), (1090, 16954), (1211, 15260), (1526, 12110), (1730, 10682), (2180, 8477), (2422, 7630), (3052, 6055), (3460, 5341), (3815, 4844)]