201991108

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{417337}}^1$

素因数の和:417363

約数の個数: 18

約数和(自身を含む): 388541678

約数和(自身を除く): 186550570

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 417337, 834674, 1669348, 4590707, 9181414, 18362828, 50497777, 100995554, 201991108]

約数ペア:

[(1, 201991108), (2, 100995554), (4, 50497777), (11, 18362828), (22, 9181414), (44, 4590707), (121, 1669348), (242, 834674), (484, 417337)]