21245368

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{563}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 41115600

約数和(自身を除く): 19870232

約数列:

[1, 2, 4, 8, 53, 89, 106, 178, 212, 356, 424, 563, 712, 1126, 2252, 4504, 4717, 9434, 18868, 29839, 37736, 50107, 59678, 100214, 119356, 200428, 238712, 400856, 2655671, 5311342, 10622684, 21245368]

約数ペア:

[(1, 21245368), (2, 10622684), (4, 5311342), (8, 2655671), (53, 400856), (89, 238712), (106, 200428), (178, 119356), (212, 100214), (356, 59678), (424, 50107), (563, 37736), (712, 29839), (1126, 18868), (2252, 9434), (4504, 4717)]