128391952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{617269}}^1$

素因数の和:617290

約数の個数: 20

約数和(自身を含む): 267895180

約数和(自身を除く): 139503228

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 617269, 1234538, 2469076, 4938152, 8024497, 9876304, 16048994, 32097988, 64195976, 128391952]

約数ペア:

[(1, 128391952), (2, 64195976), (4, 32097988), (8, 16048994), (13, 9876304), (16, 8024497), (26, 4938152), (52, 2469076), (104, 1234538), (208, 617269)]