21020348872

素因数分解:

$2^3\times {\mathrm{277}}^1\times {\mathrm{281}}^1\times {\mathrm{33757}}^1$

素因数の和:34321

約数の個数: 32

約数和(自身を含む): 39697382520

約数和(自身を除く): 18677033648

約数列:

[1, 2, 4, 8, 277, 281, 554, 562, 1108, 1124, 2216, 2248, 33757, 67514, 77837, 135028, 155674, 270056, 311348, 622696, 9350689, 9485717, 18701378, 18971434, 37402756, 37942868, 74805512, 75885736, 2627543609, 5255087218, 10510174436, 21020348872]

約数ペア:

[(1, 21020348872), (2, 10510174436), (4, 5255087218), (8, 2627543609), (277, 75885736), (281, 74805512), (554, 37942868), (562, 37402756), (1108, 18971434), (1124, 18701378), (2216, 9485717), (2248, 9350689), (33757, 622696), (67514, 311348), (77837, 270056), (135028, 155674)]