20515740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{48847}}^1$

素因数の和:48866

約数の個数: 48

約数和(自身を含む): 65651712

約数和(自身を除く): 45135972

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, 48847, 97694, 146541, 195388, 244235, 293082, 341929, 488470, 586164, 683858, 732705, 976940, 1025787, 1367716, 1465410, 1709645, 2051574, 2930820, 3419290, 4103148, 5128935, 6838580, 10257870, 20515740]

約数ペア:

[(1, 20515740), (2, 10257870), (3, 6838580), (4, 5128935), (5, 4103148), (6, 3419290), (7, 2930820), (10, 2051574), (12, 1709645), (14, 1465410), (15, 1367716), (20, 1025787), (21, 976940), (28, 732705), (30, 683858), (35, 586164), (42, 488470), (60, 341929), (70, 293082), (84, 244235), (105, 195388), (140, 146541), (210, 97694), (420, 48847)]