21053276

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4621}}^1$

素因数の和:4709

約数の個数: 24

約数和(自身を含む): 39601296

約数和(自身を除く): 18548020

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4621, 9242, 18484, 78557, 157114, 309607, 314228, 619214, 1238428, 5263319, 10526638, 21053276]

約数ペア:

[(1, 21053276), (2, 10526638), (4, 5263319), (17, 1238428), (34, 619214), (67, 314228), (68, 309607), (134, 157114), (268, 78557), (1139, 18484), (2278, 9242), (4556, 4621)]