20804469

素因数分解:

$3^1\times 7^2\times {\mathrm{307}}^1\times {\mathrm{461}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 32443488

約数和(自身を除く): 11639019

約数列:

[1, 3, 7, 21, 49, 147, 307, 461, 921, 1383, 2149, 3227, 6447, 9681, 15043, 22589, 45129, 67767, 141527, 424581, 990689, 2972067, 6934823, 20804469]

約数ペア:

[(1, 20804469), (3, 6934823), (7, 2972067), (21, 990689), (49, 424581), (147, 141527), (307, 67767), (461, 45129), (921, 22589), (1383, 15043), (2149, 9681), (3227, 6447)]