20709788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12721}}^1$

素因数の和:12773

約数の個数: 24

約数和(自身を含む): 40608624

約数和(自身を除く): 19898836

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12721, 25442, 50884, 139931, 279862, 470677, 559724, 941354, 1882708, 5177447, 10354894, 20709788]

約数ペア:

[(1, 20709788), (2, 10354894), (4, 5177447), (11, 1882708), (22, 941354), (37, 559724), (44, 470677), (74, 279862), (148, 139931), (407, 50884), (814, 25442), (1628, 12721)]