218786820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{520921}}^1$

素因数の和:520940

約数の個数: 48

約数和(自身を含む): 700119168

約数和(自身を除く): 481332348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 520921, 1041842, 1562763, 2083684, 2604605, 3125526, 3646447, 5209210, 6251052, 7292894, 7813815, 10418420, 10939341, 14585788, 15627630, 18232235, 21878682, 31255260, 36464470, 43757364, 54696705, 72928940, 109393410, 218786820]

約数ペア:

[(1, 218786820), (2, 109393410), (3, 72928940), (4, 54696705), (5, 43757364), (6, 36464470), (7, 31255260), (10, 21878682), (12, 18232235), (14, 15627630), (15, 14585788), (20, 10939341), (21, 10418420), (28, 7813815), (30, 7292894), (35, 6251052), (42, 5209210), (60, 3646447), (70, 3125526), (84, 2604605), (105, 2083684), (140, 1562763), (210, 1041842), (420, 520921)]