30816940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20011}}^1$

素因数の和:20038

約数の個数: 48

約数和(自身を含む): 80688384

約数和(自身を除く): 49871444

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 20011, 40022, 80044, 100055, 140077, 200110, 220121, 280154, 400220, 440242, 560308, 700385, 880484, 1100605, 1400770, 1540847, 2201210, 2801540, 3081694, 4402420, 6163388, 7704235, 15408470, 30816940]

約数ペア:

[(1, 30816940), (2, 15408470), (4, 7704235), (5, 6163388), (7, 4402420), (10, 3081694), (11, 2801540), (14, 2201210), (20, 1540847), (22, 1400770), (28, 1100605), (35, 880484), (44, 700385), (55, 560308), (70, 440242), (77, 400220), (110, 280154), (140, 220121), (154, 200110), (220, 140077), (308, 100055), (385, 80044), (770, 40022), (1540, 20011)]