19818420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2411}}^1$

素因数の和:2560

約数の個数: 48

約数和(自身を含む): 55919808

約数和(自身を除く): 36101388

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 411, 548, 685, 822, 1370, 1644, 2055, 2411, 2740, 4110, 4822, 7233, 8220, 9644, 12055, 14466, 24110, 28932, 36165, 48220, 72330, 144660, 330307, 660614, 990921, 1321228, 1651535, 1981842, 3303070, 3963684, 4954605, 6606140, 9909210, 19818420]

約数ペア:

[(1, 19818420), (2, 9909210), (3, 6606140), (4, 4954605), (5, 3963684), (6, 3303070), (10, 1981842), (12, 1651535), (15, 1321228), (20, 990921), (30, 660614), (60, 330307), (137, 144660), (274, 72330), (411, 48220), (548, 36165), (685, 28932), (822, 24110), (1370, 14466), (1644, 12055), (2055, 9644), (2411, 8220), (2740, 7233), (4110, 4822)]