20512781268

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{608977}}^1$

素因数の和:609392

約数の個数: 48

約数和(自身を含む): 54837250944

約数和(自身を除く): 34324469676

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 401, 802, 1203, 1604, 2406, 2807, 4812, 5614, 8421, 11228, 16842, 33684, 608977, 1217954, 1826931, 2435908, 3653862, 4262839, 7307724, 8525678, 12788517, 17051356, 25577034, 51154068, 244199777, 488399554, 732599331, 976799108, 1465198662, 1709398439, 2930397324, 3418796878, 5128195317, 6837593756, 10256390634, 20512781268]

約数ペア:

[(1, 20512781268), (2, 10256390634), (3, 6837593756), (4, 5128195317), (6, 3418796878), (7, 2930397324), (12, 1709398439), (14, 1465198662), (21, 976799108), (28, 732599331), (42, 488399554), (84, 244199777), (401, 51154068), (802, 25577034), (1203, 17051356), (1604, 12788517), (2406, 8525678), (2807, 7307724), (4812, 4262839), (5614, 3653862), (8421, 2435908), (11228, 1826931), (16842, 1217954), (33684, 608977)]