20966820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49921}}^1$

素因数の和:49940

約数の個数: 48

約数和(自身を含む): 67095168

約数和(自身を除く): 46128348

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, 49921, 99842, 149763, 199684, 249605, 299526, 349447, 499210, 599052, 698894, 748815, 998420, 1048341, 1397788, 1497630, 1747235, 2096682, 2995260, 3494470, 4193364, 5241705, 6988940, 10483410, 20966820]

約数ペア:

[(1, 20966820), (2, 10483410), (3, 6988940), (4, 5241705), (5, 4193364), (6, 3494470), (7, 2995260), (10, 2096682), (12, 1747235), (14, 1497630), (15, 1397788), (20, 1048341), (21, 998420), (28, 748815), (30, 698894), (35, 599052), (42, 499210), (60, 349447), (70, 299526), (84, 249605), (105, 199684), (140, 149763), (210, 99842), (420, 49921)]